@inproceedings{hong2006conformal,
  title={Conformal virtual colon flattening},
  author={Hong, Wei and Gu, Xianfeng and Qiu, Feng and Jin, Miao and Kaufman, Arie},
  booktitle={Proceedings of the 2006 ACM symposium on Solid and physical modeling},
  pages={85--93},
  year={2006},
  organization={ACM}
}