@article{xiang2020sketch,
  title={Sketch-based modeling with a differentiable renderer},
  author={Xiang, Nan and Wang, Ruibin and Jiang, Tao and Wang, Li and Li, Yanran and Yang, Xiaosong and Zhang, Jianjun},
  journal={Computer Animation and Virtual Worlds},
  volume={31},
  number={4-5},
  pages={e1939},
  year={2020},
  publisher={Wiley Online Library}
}