Covenants in loan contracts as a measure and aid to reduce risk
Table of contents: The Kazakh-American Free University Academic Journal №11 - 2019
Author: Stefan Noack
, MA, Young Researcher at the Chair of Business Administration, esp. Accounting and Controlling and the Chair of Business Administration, esp. Management Accounting and Internal Audit, Zwickau University of Applied Sciences, Ph.D. student of Management in a joint PhD research program between the Kazakh-American Free University and Zwickau University of Applied Sciences.
H.-Christian Brauweiler, prof. Dr. rer. pol. Dr. h.c. mult.
Chair of Business Administration, esp. Management Accounting and Internal Audit, Zwickau University of Applied Sciences., USA
Abstract
This article provides a detailed overview of
the interpretation of covenants as a means to minimize risk. Due to the fact
that companies have to take risks again and again, covenants to control them
are of great importance. It is important that these are simple and quantifiable
so that they can be understood by all parties involved. If covenants are based
on a realistic plan, the risk can certainly be minimized. The parties involved
must analyze and accept them.
A distinction is made between the most varied
types of risk. In order to work economically, the company must identify and
analyze these risks and assess their level. To do this, companies invest
enormous amounts of financial resources and call on a risk manager to help them
go through a risk management process.
If the risk is minimized through covenants, a
comprehensive and prioritized covenant checklist forms the basis. However,
their development is difficult and time-consuming. From a financial and legal
point of view, covenants are contract promises that specify which activities
may and may not be carried out. They are based on a universal legal form and
can be of a financial or operational nature. Covenants can cover many different
problem areas. The aim is to make contracts more trustworthy and realistic
through covenants.
If a company violates a covenant, this can
lead to technical failures. A distinction is made between affirmative covenants
that allow something and negative covenants that restrict something. The former
are clauses in credit agreements that oblige the borrower to take specific
measures, such as keeping appropriate accounting and creditworthiness records.
Negative covenants prevent the borrower from taking certain measures that
worsen the loan portfolio. Financial ratios are an example of this. Borrowers
avoid taking additional risks to avoid the cost of covenant breaches.
1. Introduction
In today's economic world everything is bound to a contract. Whether
a company buys assets to produce goods or sells these products to its
customers. The parties design a contract to protect their values. Of course,
every party will ensure that their interests are treated first and that certain
clauses are integrated that protect them of losing value.
The importance of creating and negotiating these contracts correctly
so that no contractual abuse can happen is depicted by the awarding of the
Nobel Prize in Economics 2016 to Bengt Holmström and Oliver Hart for their
theoretical contributions to the contraction theory which improved the meaning
of contracts for economy and society.
In this article the contracting of loan agreements is in the main
focus. This work examines if covenants are an effective measure and aid to
reduce risks in loan agreements[1]. A covenant therefore represents an additional clause in a contract
which binds the borrower to fulfil or refrain certain actions. This short
definition will be explained further in the following chapter.
Furthermore, this assignment deals with financial covenants which
allow the lender to monitor and to control the financial and economic
performance of the company. This work will therefore present some typically
employed financial indicators for monitoring the loan and will deliver
explanatory approaches how financial covenants are a solution to agency
problems and information asymmetries.
The last section will deal with the appropriate designing of loan
contracts under the usage of financial covenants. Examining how covenants can
be designed too tight and restrictive and in when this is could be happening.
Also, the authors will depict what happens after a violation of the covenant.
2. Covenants
2.1 Definition
of covenants
Covenants mean in the broadest sense additive contractual agreements
which only take effect in certain conditions. In a more strictly sense
covenants are mostly used in international loan contracts and can therefore be
determined as an additional contractual loan agreement between a lender and a
borrower[2]. The borrower commits himself to fulfil the additional agreed on
conditions during the loan period while the lender gets the power to intervene
in the financial situation of the borrower[3]. The arranged covenant can therefore
restrict the possible actions of the borrower but also force him to fulfil certain
actions[4].
Furthermore, the borrower can be bound to accomplish specified key
financial indicators during the credit period. The disregard of the agreed covenants
allows the lender to change the conditions of the loan or even to cancel the
loan contract before its fulfilment[5]. Also, he has the possibility to renegotiate the contract, implement
collaterals or increase the value of the backed collaterals. But the
possibilities always depend on the contractual design of the covenants. A
covenant thus enables the lender to influence the loan contract when a
deterioration occurs, thus these actions might be taken already before an acute
threat happens like an insolvency[6]. This shows that the creditors get by means of the loan covenants a
higher negotiating power and have a positive but also restrictive influence on
business health and recovery[7].
The aims of covenants for the lenders are to protect themselves
against a risk increase and raise the probability that the loan is repaid.
Also, the repaid credit amount can get higher[8].
Moreover, loan covenants can be used to protect the lenders against
information asymmetries and give them a monitoring device. This is also a
benefit for the borrower, which can improve the effectiveness and efficiency of
its company because he is bound to certain accounting and performance measures[9].
2.2 Certain
types of covenants
Covenants can be distinguished in affirmative (general) covenants
and financial covenants (see ill. 2.1). One speaks of affirmative covenants if
the borrower has obligated to do certain actions (positive covenants) or to
refrain from certain actions (negative covenants)[10]. Positive affirmative loan covenants can be
therefore important financial informations which the borrower must transmit
regularly in reportings to the creditor. Accordingly, possible financial
informations can be consolidated accounting statements or a review of the
economic situation of the past financial year. Likewise, monthly or quarterly
transmitted financial reports which include an income statement, a statement
about the economic and financial development of the company and a confirmation
about the compliance of the granted financial covenants might be agreed on.
Also, the loan can include covenants which require long and middle term
planning calculations (planning balance sheet, planning income statement as
well as an investment planning report)[11].
Ill. 1: Classification of types of covenants according to
Brauweiler[12]
Examples for negative covenants are agreements which avoid the
additionally collateralizing from assets to other lenders. With this sort of
covenants the first lender can complete the loan without negotiating an extra
asset security because further loans also cannot include asset securities. This
so called 'Negative Pledge' prevents, in case of an insolvency, that further
collateralized credits are treated first which would mean that the first lender
would have a higher risk than the second one[13].
Furthermore, negative covenants can limit the economic and financial
scope of the enterprise. Therefore, the borrower must obtain a permission of
the lender to execute certain actions. These can be permissions for investments
over a certain amount, the further admission of loan capital, the pledge or
sale of assets if it does not relate to the additional purpose of the company
and the changing of important contracts or the contracting of new ones[14].
Financial covenants are the most important group of covenants and
are mostly meant when talking about covenants. They are agreements between a
lender and a borrower which include financial key figures that the debtor has
to achieve. That means by overshooting or undershooting these figures the borrower
breaks the covenant and triggers previously agreed actions which e.g. might
give the lender the power of a company owner[15]. These actions can be a change of the loan
conditions or an acceleration of the debt because of the new risk situation. It
could also be a restriction in the amount of possible actions or management
decisions like investments which could, in the eyes of the lender, endanger the
repayment obligations[16]. In practice most lenders often trigger renegotiation talks to
increase their bargaining power. With this newly won power they reduce the
credit line, require additional collaterals or increase, as mentioned before,
the interest rates of the loan. But in the same way they look for performance
improvements which can mean the replacement of current chief executive officers[17].
Therefore, financial covenants deal with the capital structure, the
income situation and the liquidity of the company, but also include conditions
to the financial situation. As one can see financial covenants are part of the
creditor protection and work also as a risk reporting system and as an early
risk detection system because of the agreed financial key figures[18].
2.3 Current
situation and financial covenant use
Covenants are often used in international loan contracts and their
importance has also increased through the financial crisis in 2008 and
subsequent years. However, in Germany most loan contracts include standardised
clauses inside of the standardized general terms and conditions of contracts[19]. But at the very latest since the Basel
Capital Accord II also domestic banks established covenants in their loan
contracts[20]. Especially for German companies bank loans are an attractive way of
financing as the following illustration shows. It is the second largest method
used for financing. Only equity based mezzanine finance methods are used more.
Ill. 2: Sources
of financing from medium-sized companies in Germany from 2008 until 2014[21]
As examined before a bank loan is an often-used financial method for
German companies. Therefore, typical financial covenants indicators which are
use are the company profit (EBITDA) and a calculated dynamic debt ratio
(borrowed capital / cashflow). For example, other common
indicators are the interest coverage ratio (EBITDA/interest expense), the debt
service ratio (debt service covering Cashflow/ repayment and interest), the net
debt ratio (net debt/EBITDA) and a limit for investments[22].
Also possible are static financial indicators like the static debt
ratio, the working capital ratio, the three liquidity ratios and the equity or
debt ratio. But the usage of static indicators has decreased in practice[23]. The difference between static and dynamic
debt ratios is that dynamic debt ratios consider income and finance potentials.
But static debt ratios make a statement about the creditworthiness of the
company because they compare equity and borrowed capital. So that financial
institutions know with which amount external parties participate in the
company. On the contrary shows the dynamical debt ratio how long, measured in
years, the enterprise will need to repay their loans with their liquid funds. Therefore,
gives the dynamical debt ratio a better statement about the debt capacity for
the lender as the static one[24]. Another important information for the
lender is the profit situation of the borrower which means that the lender is
able to see that the operational income of the borrower is high enough to repay
the loan in the agreed period. The interest coverage ratio or the debt service
ratio therefore shows how many of the operational income has to be invested to
repay the interest. For example, is the indicator lower than one, the lender
has a warning sign that the borrower is not able to repay the loan. Also, a meaningful
indicator is the liquidity of the company. In which amount cover the current
assets the current liabilities or the liquidity funds the short term borrowed
capital. The debt service ratio is therefore an indicator for the financial
solvency and for the default risk. One example of how a covenant could work
illustrates the case of Key Energy Services Inc. (KES) in September 1998. The
company which offers its clients a wide array of onshore energy production
services and solutions had a loan agreement about $550 million with the PNC
Bank. The loan agreement contained, besides other indicators, a maximum debt
ratio (debt/EBITDA) which was measured by the quarterly reported debt ratio of
KES from the past. As the company's stock lost more than 50%, KES reported a
net loss and broke the covenant. The consequence was an increase in the
interest rate, the loosening up of some covenants and the adding of new
covenants and limits. In this case the firm could recover through the correctly
led intervention of the creditor[25].
3. Covenants
in loan contracts
3.1 Design of
loan contracts
The typical transaction of a loan can be divided in four phases. It
starts with the loan application which simply means that the possible borrower
makes an application for a credit to the financial institution. These
applications often have a standardized form. Based on the loan application the
lender makes a credit assessment[26]. With this audit the creditor checks if the debtor can pay the
interest and the loan amount back and estimates the risk for the possibility
that the loan is not payed back completely, not in time or never. Furthermore,
this assessment considers the legal, personal and economic circumstances of the
company[27]. Within this audit, the bank prepares already financial covenants
which are refined in the phase of the credit commitment. If the borrower is
creditable the last negotiations will begin about the components of the loan.
The formal design of the agreed terms is the loan contract which includes
typical the loan type, the loan amount, the loan period, the interest
calculation, the loan collaterals and the termination options. Finally, the
creditor will always restrict the credit commitment and will maintain the right
to renegotiate the conditions of the loan if certain agreements were not
fulfilled. This loan monitoring is a continuous process of the lender and
should reveal the economic development of the company and the appropriate usage
of the loan funds[28].
3.2 Reducing
risks in loans with financial covenants
When talking
about loans the risk which is important for the credit institute is the risk or
uncertainty that the credit is not played back. This risk is priced by the
interest of the loan. One important part of the interest rate builds the credit
spread which represents the costs for contracting and controlling of the credit
and the costs for the default risk[29].
Keeping this in mind the main reason for a covenant from the
bank´s point of view is not to price the risk but to control it, to have
a warning sign if the default risk is rising and therefore the possibility to
renegotiate the conditions of the loan. The main reason for a financial
covenant is therefore to monitor the business performance of the borrower and
to intervene if a covenant violation or break is in sight. Thus, are financial
covenants an aid to reduce agency problems[30].
Jensen and Meckling set the basis of the principle-agent-theory,
explaining that there exists information asymmetries between the principle
(company owner) and the agent (management) inside of a company structure. This
agency problems can be transferred to all contractual relations and lead to the
debt holder-shareholder conflict[31]. This simply means that there also exist information gaps between a
lender and the entrepreneur about how future profits are used correctly[32]. The entrepreneur could for example misuse
the borrowed capital by paying all the money derived by the loan to the owner
in form of dividends. The consequence would be that the shareholder value is
rising but the real company value would decrease through the missing liquidity
so that the creditor would get an empty shell of the company[33].
Covenants are therefore an aid to reduce this information
asymmetries by giving the lender more power to exercise control rights and
secure loan values. Regarding this they can use the ex-ante mechanism of
covenants which are the transmitting of financial information from the borrower
to the lender through contracted positive affirmative covenants. Also, they can
use the function of negative affirmative covenants as a measure to restrict
certain actions a priori. Moreover, they can use the ex-post mechanism of
financial covenants to mitigate moral hazard problems giving the lender the
right to influence corporate decisions or to renegotiate the loan conditions
when certain financial indicators are going to be violated[34]. The aim of the lender is to remove agency
problems using covenants to reduce the default risk and ensure a risk adequate
pricing[35].
3.3 Covenant
violation and tightness
As explained in the chapter before,
covenants are helpful for credit institutions to have a better risk control and
monitoring. But what happens if the borrower violates the covenant. If a so
called 'breach of covenants' happens the lender can take certain measures to
mitigate the risk of default[36].
Ill. 3: Breach of Covenants[37]
The right of cancellation is not often used in practice but
therefore a renegotiation of the loan conditions especially a new evaluation of
the interest rate to adapt the risk to the new circumstances is regularly
considered[38]. Furthermore, the cancellation is mostly agreed to only very
important covenants. If the cancellation is not used the borrower can apply a
waiver from the bank. This covenant waiver is usually in conjunction with so
called waiver fees which the borrower must pay otherwise the loan is cancelled.
Further measures are also that current credits from other banks are suspended
or that the borrower requires an increase of the equity. Also, often additional
negotiations for gaining additional collaterals and to take influence on the
company's performance will take place between borrower and lender[39].
Moreover, the intensity and therefore the tightness of the
contracted covenants is of some importance. If any covenant is set too tight it
can be too restrictive for the borrower, and if set to lax principal-agency
problems would occur[40].
However, covenant tightness depends on the former duration of the
relationship and on the extend of information asymmetries between the lender
and the borrower. With an increase in the duration of the loan relationship the
tightness of covenants decreases because forecasts getting more uncertain and
the future improvement is in focus. Under consideration of the information
asymmetry theory the lending duration plays a more important role for small
unrated borrowers with no access to the stock market on covenant tightness.
Therefore, covenants are also formulated tight if the company is big, rated and
has access to the stock market. Thus, information asymmetries occur and
covenants are set more tightly to strengthen the bargaining position of the
lender and limit the misuse of the loan[41].
On the other side, the quantity of employed financial covenants can
have an impact on the relationship. If the relationship intensity is low the
covenant intensity is low, too. The reasons for this are mainly performance
monitoring incentives of the lender which are realized through financial
covenants. This means that monitoring incentives and the related benefits of
them are increasing with the relationship intensity until the relationship
enters an exclusive state so that the borrower uses a lot of services from the
lender[42].
Conclusion
As described in this thesis covenants and especially financial
covenants are appropriate aids and measures to reduce risks in loan contracts
for the lender. Thereby they work as a risk monitoring and controlling tool and
reduce the default risk through showing signs that the future repayment of the
credit might be in danger, if this is the case. This means that financial
covenants function as an early risk reporting and detection system. Those in
the contract defined and agreed upon indicators, e.g. typically used is the net
debt ratio (net debt/EBITDA), deliver warning signs if the company has problems
with its operative performance and more importantly with the repayment of the
loan. This can lead or has led to a violation of the covenant, also called a
breach of covenants. The lender has than the possibility to intervene through
the agreed covenants. Possible actions could be the cancellation of the loan
(not used often) but also waiver fees which arise because the lender avoids
taking certain actions as requested by the borrower. Furthermore, the creditor
can limit investments, restrict the strategical scope and renegotiate the
conditions of the loan (often resulting in a raise of the interest rate due to
an increased risk premium) from the borrower depending on the arrangement.
The other part of
the contract relates to the borrower who must obey to and fulfil the financial
covenants. The problem here is that the financial covenants can be to tight, to
intensive and thereby restrictive for the debtor.
This underlines the fact that companies think that after a breach of
covenant their financial and strategic scope is restricted. Additional work has
to be accomplished, as the company must create monthly reports, e.g. about the
financial situation or the compliance of the covenants. This means an increase
in the costs for external consultants which also lead the negotiations with the
credit institution. Anyway, financial covenants are nowadays included in most
of standard loan contracts. In practice there is no clear opinion on the
borrower´s side if the credit costs are really lower by the use of covenants.
This is derived by the possible negative effects of further renegotiation
processes and the possibility of the violation of the covenant which in turn
means higher credit and additional negotiation costs[43].
REFERENCES
1. Brauweiler, Hans-Christian (2014): Implications and Effects of the Basel-III-Accord for the Financing of Companies; in: Makiiwskii Ekonomiko-gumanitarii Institut MEGI (Makeeva-Institut für
Ökonomie und Humanitäre Wissenschaft, Ukraine) (Hrsg.): Tagungsband zur 15. Internationalen wissenschaftlichen Konferenz, Makeeva
2. Brauweiler, Hans-Christian (2015): Risikomanagement in
Banken und Kreditinstituten, Springer Essentials, Springer
3. Brauweiler, Hans-Christian (2016): Covenants in der
Unternehmenskrise, Tagungsband "Innovation in der modernen Welt: Ziele,
Prioritäten, Lösungen", Uraler Akademie für Wirtschaft,
Verwaltung und Recht, Yekaterinburg
4. Brauweiler, Hans-Christian (2018b): Risikomanagement
in Unternehmen, 2. Auflage, Springer Essentials, Springer
5. Graml, Stefan (2014): Konzernabschlüsse unter
Berücksichtigung von IFRS 11. Implikationen auf Financial Covenants von
DAX Unternehmen. 1. Auflage, Wiesbaden: Springer
Fachmedien Wiesbaden GmbH.
6. Olfert, Klaus (2013): Kompendium der praktischen
Betriebswirtschaftslehre. Finanzierung. 16. Auflage,
Herne: NWB Verlag GmbH & Co.KG.
7. Prilmeier, Robert (2017):
Why do loans contain covenants? Evidence from lending relationships, in:
Journal of Financial Economics (2017), Vol.123, pp. 558'579.
8. Robin, Ashok; Wu, Qiang;
Zhang, Hao (2017): Auditor Quality and Debt Covenants, in: Contemporary
Accounting Research (CAR) (Spring 2017), Vol.34, No. 1, pp. 154'185.
9. Servatius, Wolfgang (2013): Covenants in der
Restrukturierung, in: Corporate Finance law, Heft 1, pp. 14 ' 22.
10. Situm, Mario (2016): Finanzierungsstruktur
optimieren. Praxisleitfaden für Unternehmer und Berater. Herne: NWB Verlag
GmbH & Co. KG.
11. Statista (2014): Finanzierungsquellen von
mittelständischen Unternehmen in Deutschland bis 2014, in: https://de.statista.com/statistik/daten/studie/261431/
umfrage/finanzierungsquellen-von-mittelstaendischen-unternehmen-in-deutschland/,
Stand 04.11.2017.
12. Wang, Jing (2017): Debt
covenant design and creditor control rights. Evidence from the tightest
covenant, in: Journal of Corporate Finance (2017), Vol.44, pp. 331'352.
13. Wöhe, Günter; Bilstein, Jürgen;
Ernst, Dietmar; Häcker, Joachim (2013): Grundzüge der
Unternehmensfinanzierung. 11. Auflage, München: Franz Vahlen GmbH.
14. Zeit Online (2016): Wirtschaftsnobelpreis geht an
Oliver Hart und Bengt Holmström, in:
http://www.zeit.de/wirtschaft/2016-10/wirtschaftsnobelpreis-geht-an-oliver-hart-und-bengt-holmstroem,
Stand 07.11.2017.
15. Zirkler, Bernd; Hofmann, Jonathan; Schmolz, Sandra:
Controlling und Basel III, Springer Essentials, Springer-Gabler 2014
16. Zülch, Henning; Holzamer, Matthias; Böhm,
Josefine; Kretzmann, Christian (2014): Financial Covenants aus Banken- und
Unternehmenssicht. Eine Kosten-Nutzen-theoretische Analyse, in: Der Betrieb
(2014), Heft 38, pp. 2117-2122.
[1] Cf. H.-Ch. Brauweiler (2016).
[2] Cf. G. Wöhe / J. Bilstein / D. Ernst / J.
Häcker (2013), p. 242.
[3] Cf. R. Prilmeier (2017), p. 560.
[4] Cf. G. Wöhe / J. Bilstein / D. Ernst / J.
Häcker (2013), p. 242.
[5] Cf. A. Robin / Q. Wu / H. Zhang (2017), p. 157.
[6] Cf. G. Wöhe / J. Bilstein / D. Ernst / J.
Häcker (2013), p. 242.
[7] Cf. R. Prilmeier (2017), p. 560.
[8] Cf. G. Wöhe / J. Bilstein / D. Ernst / J.
Häcker (2013), p. 242.
[9] Cf. R. Prilmeier (2017), p. 560f.
[10] Cf. G. Wöhe / J. Bilstein / D. Ernst / J.
Häcker (2013), p. 242.
[11] Cf. S. Graml (2014), p. 42.
[12] H.-Ch. Brauweiler (2016), p. 6.
[13] Cf. G. Wöhe / J. Bilstein / D. Ernst / J.
Häcker (2013), p. 242.
[14] Cf. S. Graml (2014), p. 43.
[15] Cf. H. Zülch / M. Holzamer / J.
Böhm / K. W. Kretzmann (2014), p. 1f.; G. Wöhe / J. Bilstein / D. Ernst / J. Häcker (2013), p. 243.
[16] Cf. H. Zülch / M. Holzamer / J.
Böhm / K. W. Kretzmann (2014), p. 1f.; G. Wöhe / J. Bilstein / D. Ernst / J. Häcker (2013), p. 243; R. Prilmeier (2017), p. 560.
[17] Cf. R. Prilmeier (2017), p. 560.
[18] Cf. H. Zülch / M. Holzamer / J.
Böhm / K. W. Kretzmann (2014), p. 1f.
[19] Cf. H. Zülch / M. Holzamer / J.
Böhm / K. W. Kretzmann (2014), p. 2; G. Wöhe / J. Bilstein / D. Ernst
/ J. Häcker (2013), p. 242.
[20] Cf. W. Servatius (2013), p. 1f.; B. Zirkler; J. Hofmann; S. Schmolz: (2014); H.-Ch. Brauweiler (2014)
[21] Cf. in the internet: Statista (2014).
[22] Cf. G. Wöhe / J. Bilstein / D. Ernst / J.
Häcker (2013), p. 243.
[23] Cf. H. Zülch / M. Holzamer / J.
Böhm / K. W. Kretzmann (2014), p. 2.
[24] Cf. H. Zülch / M. Holzamer / J.
Böhm / K. W. Kretzmann (2014), p. 2; S. Graml (2014), p. 46f.; K. Olfert (2013), p. 487.
[25] Cf. R. Prilmeier (2017), p. 560.
[26] Cf. K. Olfert (2013), p. 324; H.-Ch.
Brauweiler (2015).
[27] Cf. G. Wöhe / J. Bilstein / D. Ernst / J.
Häcker (2013), p. 221f.
[28] Cf. K. Olfert (2013), p. 326-332.
[29] Cf. M. Situm (2016), p. 85-90.
[30] Cf. H. Zülch / M. Holzamer / J.
Böhm / K. W. Kretzmann (2014), p. 2-5.
[31] Cf. ibidem, p. 2.
[32] Cf. R. Prilmeier (2017), p. 560f.
[33] Cf. H. Zülch / M. Holzamer / J.
Böhm / K. W. Kretzmann (2014), p. 2.
[34] Cf. J. Wang (2017), p. 332.
[35] Cf. H. Zülch / M. Holzamer / J.
Böhm / K. W. Kretzmann (2014), p. 4f.
[36] Cf. W. Servatius (2013), p. 2.
[37] Source: own presentation, content related
to: S. Graml (2014), p.51.
[38] Cf. W. Servatius (2013), p.2.
[39] Cf. S. Graml (2014), p.51f.
[40] Cf. H. Zülch/M. Holzamer/J. Böhm/K.
W. Kretzmann (2014), p.3.
[41] Cf. R. Prilmeier (2017), p.563-578.
[42] Cf. R. Prilmeier (2017), p. 578.
[43] Cf. H. Zülch/M. Holzamer/J. Böhm/K.
W. Kretzmann (2014), p.4f.
Table of contents: The Kazakh-American Free University Academic Journal №11 - 2019
|