@unpublished{Hartner:2003:OSS,
  abstract = {In computer graphics, silhouette extraction and rendering has a
              critical role in a growing number of applications. This paper
              examines five object space silhouette extraction algorithms for
              polygonal models. The algorithms are applied to a variety of
              models and compared in terms of code complexity and run time
              performance. The purpose of this paper is to inform programmers
              who must choose from among these five algorithms.},
  localfile = {papers/Hartner.2003.OSS.pdf},
  title = {{O}bject {S}pace {S}ilhouette {A}lgorithms},
  author = {Ashley Hartner and Mark Hartner and Elaine Cohen and Bruce Gooch},
  note = {Unpublished},
  year = {2003},
}