@article{xin2010applying,
  title={Applying the improved Chen and Han¡¯s algorithm to different versions of shortest path problems on a polyhedral surface},
  author={Xin, Shi-Qing and Wang, Guo-Jin},
  journal={Computer-Aided Design},
  volume={42},
  number={10},
  pages={942--951},
  year={2010},
  publisher={Elsevier}
}