@article{lai2014folding,
  title={Folding-free global conformal mapping for genus-0 surfaces by harmonic energy minimization},
  author={Lai, Rongjie and Wen, Zaiwen and Yin, Wotao and Gu, Xianfeng and Lui, Lok Ming},
  journal={Journal of Scientific Computing},
  volume={58},
  number={3},
  pages={705--725},
  year={2014},
  publisher={Springer}
}