@inproceedings{grapp2007npt,
  title = {Non-Photorealistic Rendering of Algorithmically Generated Trees},
  author = {Nathan Dudley and Cindy Grimm},
  booktitle = {GRAPP},
  pages = {197-204},
  publisher = {INSTICC},
  note = {Nathan's master's thesis. },
  month = {March},
  year = {2007}
}