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Science Proceedings Series | 2020
A. O. Zhapekova, D. A. Baiseitov, F. Yu. Abdrakova, G. A. Spanova, G. O. Tureshova, L. R. Sassykova, M. I. Tulepov, S. Kh. Aknazarov
ARPN Journal of Engineering and Applied Sciences | 2020