@article{Ryazanov2019a,
author={Ryazanov, S.A.},
title={A Geometrical Model Producing a Surface Equivalent To the Working Surface of the Gear Tool «Hob»},
journal={Geometry & Graphics},
publisher={INFRA-M Academic Publishing LLC.},
year={2019},
pages={56-60},
volume={7},
issue={2},
}