1. I. Spiro and M. Schlessinger. 1989. Infrared Technology Fundamentals. New York: Marcel Dekker, 111.
2. E. Pearson, L. Stepp, and J. Fox. February 1988. “Active Optics Correction of Thermal Distortion of a 1.8 Meter Mirror.” Optical Engineering 27, 2:115–22.
3. Milles Griot, Inc. 1991. “Mirrors: Materials and Specifications.” Photonics Handbook. Laurin Publishers, H-341–H-343.
4. P. Ceravolo. December 1989. “Commercial Telescope Optics: Buyers Beware!” Sky and Telescope, 564.
5. Private communication with Tom Roberts, 1993.