F.V. Lisovskiĭ, E.G. Mansvetova

O.V. Druzhinina - Dr.Sc. (Phys.-Math.), Professor, Chief Research Scientist, FRC «Computer Science and Control» of RAS (Mocsow). E-mail: ovdruzh@mail.ru O.N. Masina - Dr.Sc. (Phys.-Math.), Head of of Department Mathematical Modeling and Computer Technologies, Yelets State University named after I.A. Bunin. E-mail: olga121@inbox.ru

E.D. Tarova - Post-graduate Student, Elets State University named after I.A. Bunin E-mail: katerina.tarova@yandex.ru