A.S. Pustoshilov1, S.P. Tsarev2, M.M. Valikhanov3, K.S. Firyago4

1–4 Siberian Federal University (Krasnoyarsk, Russia)

1 alphasoft@inbox.ru, 2 sptsarev@mail.ru, 3 mvalikhanov@sfu-kras.ru, 4 kosfiryago@gmail.com