@article{Grigoreva2015the,
author={Grigoreva, I.V. and Volkova, E..},
title={The strong-willed athlete training},
journal={Voronezh Scientific-Technical Bulletin},
publisher={FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov},
year={2015},
pages={4-6},
volume={4},
issue={3},
}