V.R. Krasheninnikov – Dr.Sc.(Eng.), Professor, Head of Department «Applied Mathematics and Informatics», Ulyanovsk State Technical University

E-mail: kvrulstu@mail.ru

A.Yu. Subbotin – Post-graduate Student, Department «Applied Mathematics and Informatics»,  Ulyanovsk State Technical University

E-mail: ashkael@mail.ru