1. I. A. Khrebtov and V. G. Malyarov, Opt. Zh. 64(6), 3 (1997).
2. K. C. Liddiard, Infrared Phys. 26, 3 (1996).
3. K. C. Liddiard, M. H. Unewiesse, and O. Reinhold, Proc. SPIE 2225, 62 (1994).
4. P. E. Shepeliavyi, K. V. Michailovskaya, and I. Z. Indutnyi, in Proceedings of the International Conference on Advanced Materials, Kiev, 1999, p. 92.
5. E. V. Mikhailovskaya, I. Z. Indutnyy, and P. E. Shepeliavyi, Zh. Tekh. Fiz. 73(2), 129 (2003) [Tech. Phys. 48, 261 (2003)].