E.V. Semina - Post-graduate Student, Department of Applied Mathematics, Moscow State University of Eco-nomics, Statistics and Informatics. E-mail: semina_elisaveta@mail.ru
Nguyen Quang Thuong - Dr. Sc. (Eng.), Senior Research Scientist, Dorodnicyn Computing Centre of RAS (Moscow). E-mail: tikhonmos@yahoo.com
Do Thi Thanh Van - Post-graduate Student, Moscow Institute of Physics and Technology (State University). E-mail: vannhi45@gmail.com
