L.V. Cherkesova

P.S. Zasedateleva - Post-graduate Student, Department of Economic and Information Systems, Povolzhskiy State University of Telecommunications and Informatics (PSUTI), Samara E-mail: zasedateleva_ps@mail.ru О.N. Maslov - Dr.Sc. (Eng.), Professor, Head of Department of Economic and Information Systems, Povolzhskiy State University of Telecommunications and Informatics (PSUTI), Samara. E-mail: maslov@psati.ru А.V. Ryabushkin - Engineer, Department of Economic and Information Systems, Povolzhskiy State University of Telecommunications and Informatics (PSUTI), Samara. E-mail: ryabushkin@psati.ru