A.V. Bogoslovsky, I.V. Zhigulina, V.A. Jakovlev

A.V. Bogoslovsky - Dr.Sci. (Eng.), Prof. of the chair of Higher Mathematics, Tambov STU I.V. Zhigulina - Ph.D. (Eng.), Associate Professor of the chair of Applied Mathematics and Mechanies, Tambov STU. E-mail:irazhigulina@gmail.ru

A.V. Bogoslovsky1, S.V. Vasilyev2, I.V. Zhigulina3

1-3 MESC AF “N.E. Zhukovsky and Y.A. Gagarin Air Force Academy” (Voronezh, Russia)

1 p-digim@mail.ru; 2 stanislav-vas1986@mail.ru; 3 ira_zhigulina@mail.ru