@article{Christensen:1999:CR,
  number = {1},
  volume = {33},
  month = feb,
  optissn = {0097-8930},
  author = {Per H. Christensen},
  optstatus = {url},
  url = {http://web.archive.org/web/20050312133920/http://www.siggraph.org/publications/newsletter/v33n1/contributions/Christensen.html},
  localfile = {papers/Christensen.1999.CR.pdf},
  abstract = {A contour image represents the essence of a scene, a "simplified
              reality." Contours are used in non-photorealistic images for
              comics and cartoons to illustrate geometric shape, spatial
              relationships, color, texture and illumination. This article
              describes traditional and computer-generated contour rendering,
              gives examples of contour placement and styles, discusses some
              practical issues, and describes the contour shader interface of
              the rendering program mental ray.},
  title = {{C}ontour {R}endering},
  doi = {http://doi.acm.org/10.1145/563666.563688},
  journal = j-COMP-GRAPHICS,
  pages = {58--61},
  year = {1999},
}