Zholdybayev, T. K.
Sadykov, B. M.
Nassurlla, M.
Ussabayeva, G.
Duisebayev, B. A.
Ismailov, K. M.
Dyachkov, V. V.
Saduyev, N. O.
Article History
Received: 12 November 2018
Revised: 8 April 2019
Accepted: 27 May 2019
First Online: 4 October 2019