@article{Krivenkov2020assessment,
author={Krivenkov, A.A. and Kim, T.K.},
title={Assessment of the psycho-emotional state of elderly people engaged in physical education and health-improvement programs under the Moscow Longevity Project},
journal={Journal of Pedagogical Studies},
publisher={INFRA-M Academic Publishing LLC.},
year={2020},
pages={38-46},
volume={5},
issue={3},
}