Craidon, Charlotte B.:
A Description of the Langley Wireframe
Geometry Standard (LaWgs) Format.
NASA Technical Memorandum 85767, February 1985.
Newman, William M.; and Sproull, Robert F.:
Principles of Interactive Computer Graphics.
McGraw-Hill, 1973, pp. 421-454.
Sutherland, Ivan E.; Sproull, Robert F.; and Shumacker, Robert A.:
A Characterization of Ten Hidden-Surface Algorithms.
Computing Surveys, vol. 6, no. 1, March 1974, pp. 1-55.
Hedgeley, David R., Jr.:
An Efficient Algorithm for Choosing the Degree of a Polynomial
to Approximate Discrete Nonoscillatory Data.
NASA Technical Memorandum 72854, April 1978.
Hedgeley, David R., Jr.:
A Characterization of the Real Zeros of a
Particular Trancendental Function.
NASA Technical Paper 1420, March 1979.