@inproceedings{Zhang:2009:I3D,
  author = "Long Zhang and Ying He and Xuexiang Xie and Wei Chen",
  title = "Laplacian Lines for Real-Time Shape Illustration",
  booktitle = "Proceedings of ACM Symposium on Interactive {3D} Graphics and Games 2009",
  year = "2009",
  month = March,
  pages = "129--136",
}