О.V. Druzhinina - Dr. Sc. (Phys.-Math.), Professor, Main Research Scientist, Institute of Informatics Problems of RAS (Moscow). E-mail: ovdruzh@mail.ru Z.L. Shulimanova - Dr. Sc. (Phys.-Math.), Head of Department, Moscow State University of Railway Engineering. E-mail: zinaida110@yandex.ru V.L. Vorontsova - Ph. D. (Phys.-Math.), Associate Professor, Institute of Management, Economics and Finance (Kazan?) T.F. Klimova - Ph. D. (Eng.), Associate Professor, Moscow State University of Railway Engineering