@article{gurijala2013colon,
  title={Colon Flattening Using Heat Diffusion Riemannian Metric},
  author={Gurijala, Krishna Chaitanya and Shi, Rui and Zeng, Wei and Gu, Xianfeng and Kaufman, Arie},
  journal={IEEE transactions on visualization and computer graphics},
  volume={19},
  number={12},
  pages={2848--2857},
  year={2013},
  publisher={IEEE}
}