Viktor D. Mazurov (Sobolev Institute of Mathematics, Novosibirsk State University, Russia)
Pavel S. Kolesnikov (Novosibirsk State University, Russia)
Andrey V. Vasil’ev (Novosibirsk State University, Russia)
Valeriy G. Bardakov (Sobolev Institute of Mathematics, Russia)
Alexandr N. Zubkov (UAEU, United Arab Emirates).
Kanat S. Abdukhalikov (UAEU, United Arab Emirates)