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 (Sobolev Institute of Mathematics, Omsk branch, Russia)

Kanat S. Abdukhalikov (UAEU, United Arab Emirates)