4. Chase Richard B., 2008.: Manufacturing and Operating Management. M.: Publishing House "Williams", 1184 p.
5. Danich V., 2010.: Modeling of avalanche-like socioeconomic processes. Teka. Commission of motorization and power industry in agriculture Lublin university of technology Volodimir Dal East-Ukrainian national university of Lugansk. Volume XA. Lublin, p. 78-91.
6. David H. Meister. 1993.: Managing the Professional Service Firm. New York: The Free Press, p. 498-522.
7. Dibnis G.I., Romahova O.A., Derjak N.A. and others, 2009.: Theory and practice of business administration: a training manual. Lugansk: Knowledge, 488 p.