1. W. L. Wolfe: in The Infrared Handbook, ed. W. L. Wolfe and G. J. Zissis (ERIM, Ann Arbor, MI, 1978) pp. 45–76.
2. R. T. Jones: J. Opt. Soc. Am. 44 (1954) 630.
3. W. J. Smith: Modern Optical Engineering (McGraw-Hill, New York, 1990) p. 333.
4. Zemax Optical Design Program User’s Guide (version 10.0, Focus Software, Inc., 2001).