@article{Michurina2021extracurricular,
author={Michurina, E.S. and Kozhevnikova, E.E. and Tuzhilkin, S.A.},
title={Extracurricular Activities as a Condition for the Intellectual Development of Young Teenagers},
journal={Bulletin of Kemerovo State University. Series: Humanities and Social Sciences},
publisher={Kemerovo State University},
year={2021},
pages={21-31},
volume={5},
issue={1},
}