1. M.E. Daily:Masters Thesis, University of New Mexico (1987)
2. I.M. Belousova, B.D. Bobrov, V.M. Kiselev, V.N. Kurzenkov, P.I. Krepostnov: Opt. Spektrosk.,37, 20?24 (1974)
3. W.C. Hwang, J.V.V. Kasper: Chem. Phys. Lett.13, 511?514 (1972)
4. I.M. Belousova, B.D. Bobrov, V.M. Burtsev, A.S. Grenishin, V.A. Dubyanskii, V.M. Kiselev, A.B. Produvnov: Sov. Phys. Tech. Phys.22, 617?618 (1977)
5. I.M. Belousova, B.D. Bobrov, V.M. Kiselev, V.N. Kurzenkov: Sov. J. Quant. Electron.4, 767?769 (1974)