Affiliation: | (1) Faculty of Mechanics and Mathematics, Moscow State University, Moscow, 119991, Russia;(2) Bashkortostan State University, ul. Frunze 32, Ufa, 450074, Bashkortostan, Russia;(3) Institute of Mechanics, Ufa Science Center, Russian Academy of Sciences, pr. Oktyabrya 71, Ufa, 450054, Bashkortostan, Russia |