@inproceedings{zeng2009canonical,
  title={Canonical homotopy class representative using hyperbolic structure},
  author={Zeng, Wei and Jin, Miao and Luo, Feng and Gu, Xianfeng David},
  booktitle={IEEE International Conference on Shape Modeling and Applications (SMI)},
  pages={171--178},
  year={2009},
  organization={IEEE}
}