@inproceedings{he2006manifold,
  title={Manifold T-spline},
  author={He, Ying and Wang, Kexiang and Wang, Hongyu and Gu, Xianfeng and Qin, Hong},
  booktitle={International Conference on Geometric Modeling and Processing},
  pages={409--422},
  year={2006},
  organization={Springer}
}