I. Zyrianova, N., M. Dorozhkin, E., V. Zaitseva, Y., S. Korotayer, I., & D. Shcherbin, M. (2018). Trends in and principles of training vocational teachers. International Journal of Engineering & Technology, 7(2.13), 200-204. https://doi.org/10.14419/ijet.v7i2.13.11687