@article{Khimikova2015comparative,
author={Khimikova, O.. and Elman, K.. and Burykin, Y.. and Provorova, O..},
title={Comparative characteristics of heart rate variability parameters of Yugra pupils },
journal={Complexity. Mind. Postnonclassic},
publisher={INFRA-M Academic Publishing LLC.},
year={2015},
pages={11-20},
volume={4},
issue={2},
}