@inproceedings{pg2003uts,
  title = {Using Texture Synthesis for Non-Photorealistic Shading from Paint Samples},
  author = {Christopher Kulla and James Tucek and Reynold Bailey and Cindy Grimm},
  booktitle = {Pacific Graphics},
  pages = {477--481},
  note = {Shading using texture},
  month = {October},
  year = {2003}
}