@article{Ragozin2022photoperiodic,
author={Ragozin, O.. and Schalamova, E.. and Datieva, F.. and Pogonysheva, I..},
title={Photoperiodic chronotype stability in students of Khanty-Mansi Autonomous Area – Yugra and Vladikavkaz},
journal={Bulletin of Nizhnevartovsk State University},
publisher={Nizhnevartovsk State University},
year={2022},
pages={65-72},
volume={},
issue={1},
}