@article{Antonova2021mathematical,
author={Antonova, I.V. and Solomonova, E.V. and Kadykova, N.S.},
title={Mathematical Description for a Particular Case of Ellipse Focus Quasi-Rotation Around an Elliptical Axis},
journal={Geometry & Graphics},
publisher={INFRA-M Academic Publishing LLC.},
year={2021},
pages={39-45},
volume={9},
issue={1},
}