Sitnikova, Marya I., Elena N. Krolevetskaya, Elena I. Eroshenkova, Oksana E. Kucherova, and Stella Ya. Yanutik. 2017. “Polysubject of the Student Group As a Psychological and Pedagogical Problem”. Journal of History Culture and Art Research 6 (4):350-61. https://doi.org/10.7596/taksad.v6i4.1179.