Institution: | 1.Al-Farabi Kazakh National University, Almaty, 480078, Kazakhstan ;2.Institute of Mathematics and Mathematical Modeling, Ministry of Education and Science, Republic of Kazakhstan, Almaty, 050010, Kazakhstan ;3.Kazakh-British Technical University, Almaty, 050000, Kazakhstan ;4.Novosibirsk State Technical University, Novosibirsk, 640073, Russia ; |