Malashchonak, М. V.
Streltsov, E. A.
Mazanik, A. V.
Kulak, A. I.
Dergacheva, M. B.
Urazov, K. A.
Pilko, V. V.
Funding for this research was provided by:
State program of scientific researches of the Republic of Kazakhstan (#055 “Scientific and/or scientific and technical activity”, the subprogram 101, project № 2/217/GF4.)