Research Article
Elena N. Prokofieva, Klavdiya G. Erdyneyeva, Alexander A. Galushkin, Alexey I. Prokopyev, Valeriy I. Prasolov, Svetlana I. Ashmarina, Boris V. Ilkevich, Milan Kubiatko
EURASIA J Math Sci Tech Ed, Volume 14, Issue 3, pp. 753-764
https://doi.org/10.12973/ejmste/80903