@INPROCEEDINGS{Lin_ICRA_2017,
  author =       {Yu-Yao Lin and Chien-Chun Ni and Na Lei and
  Xianfeng Gu and Jie Gao},
  title =        {Robot Coverage Path Planning for General
  Surfaces Using Quadratic Differentials},
  booktitle =    {Proceeding of 2017 IEEE International Conference
  on Robotics and Automation (ICRA)},
  year =         {2017},
  pages =        {5005--5011},
  month =        {May 29-June 3},
}