@article{ng2014computing,
  title={Computing extremal teichm{\"u}ller map of multiply-connected domains via beltrami holomorphic flow},
  author={Ng, Tsz Ching and Gu, Xianfeng and Lui, Lok Ming},
  journal={Journal of Scientific Computing},
  volume={60},
  number={2},
  pages={249--275},
  year={2014},
  publisher={Springer}
}