Takafumi Saito and Tokiichiro Takahashi.
Comprehensible Rendering of 3-D Shapes.
In Computer Graphics, Proceedings of ACM Siggraph 1990, vol. 24, no. 4, pp. 197--206, 1990.

Bibtex:

@Article{ 	saito:1990:CRDSy,
  author = 	"Takafumi Saito and Tokiichiro Takahashi",
  title = 	"Comprehensible Rendering of 3-D Shapes",
  journal = 	"Computer Graphics, Proceedings of ACM Siggraph 1990",
  volume = 	"24",
  number = 	"4",
  pages = 	"197--206",
  year = 	"1990",
}