V.M. Artyushenko - Dr. Sc. (Eng.), Professor, Head of Department, Financial and Technological Academy (Korolyov, Moscow region) E-mail: artuschenko@mail.ru V.I. Volovach - Ph. D. (Eng.), Associate Professor, Head of Department, Volga Region State University of Service (Togliatti, RF) E-mail: volovach.vi@mail.ru V.V. Ivanov - Dr. Sc. (Eng.), Professor, Dean of Faculty, Volga Region State University of Service (Togliatti, RF) E-mail: Ivanov@tolgas.ru