1. S. F. Luk'yanenko, M. M. Makogon, and I. N. Sinitsa, Intracavity Laser Spectroscopy. Foundations of the Method and Applications [in Russian], Novosibirsk (1985).
2. C. Chakerian and W. F. Weisbach, J. Opt. Soc. Am.,63, No. 3, 342?435 (1973).
3. V. S. Burakov, Zh. Prikl. Spektrosk.,7, No. 2, 223?236 (1981).
4. V. P. Lopasov and A. M. Solodov, Zh. Prikl. Spektrosk.,33, No. 2, 375?377 (1980).