@article{Ding_2016,
title={A survey of sketch based modeling systems},
volume={10},
ISSN={2095-2236},
url={http://dx.doi.org/10.1007/s11704-016-5422-9},
DOI={10.1007/s11704-016-5422-9},
number={6},
journal={Frontiers of Computer Science},
publisher={Springer Science and Business Media LLC},
author={Ding,
Chao and Liu,
Ligang},
year={2016},
month=jul,
pages={985–999} }