Research Article
Elvira G. Sabirova, Zulfiya F. Zaripova, Mikhail N. Mikhaylovsky, Yulia V. Serebrennikova, Julia V. Torkunova, Stanislav I. Buslaev
EURASIA J Math Sci Tech Ed, Volume 16, Issue 10, Article No: em1890
https://doi.org/10.29333/ejmste/8501