Research Article
Olga A. Anikeeva, Valeriya V. Sizikova, Tatiana E. Demidova, Larisa I. Starovojtova, Anna G. Akhtyan, Regina B. Godzhieva, Anastasia V. Karpunina, Zhumagul A. Maydangalieva
EURASIA J Math Sci Tech Ed, Volume 15, Issue 11, Article No: em1768
https://doi.org/10.29333/ejmste/109504