@article{Kheyfets2017conics,
author={Kheyfets, A.L.},
title={Conics As Sections of Quadrics by Plane (Generalized Dandelin Theorem)},
journal={Geometry & Graphics},
publisher={INFRA-M Academic Publishing LLC.},
year={2017},
pages={45-58},
volume={5},
issue={2},
}