Samara Ryazanov Vladimir Vladimirovich Samara State University, л. Академика Павлова, 1, Самара, Самарская обл. rvv345@inbox.ru Read more about Ryazanov Vladimir Vladimirovich TsvetkovVitaly V. Samara State University, л. Академика Павлова, 1, Самара, Самарская обл. vi.v.tsvetkoff@gmail.com Read more about Vitaly V. Tsvetkov RadchenkoVladimir P. Samara State Technical University, 443100, Samara St. Molodogvardeyskaya, 244 radchenko.vp@samgtu.ru Read more about Vladimir P. Radchenko
