1. J.T. Verdeyen, Laser electronics, Prentice Hall, Englewood Cliffs, 1995, pp. 411–417.
2. N. Rizvi, Laser Focus World, November 2000, pp. 75–80.
3. F. Ouelette, SPIE OE Magazine, January 2001, pp. 38–43.
4. J. Webbs, Laser Focus World, September 2000, pp. 87–92.
5. P. Klocek, Handbook of Infrared Optical Materials, Marcel Dekker, New York, 1991, pp. 569–576.