1. S. J. Ladner and R. S. Becker, J. Chem. Phys.,43, 3344–3354 (1965).
2. V. V. Sapunov and M. P. Tsvirko, Opt. Spektr.,49, 283–289 (1980).
3. V. V. Sapunov, Khim. Fiz.,4, No. 1, 50–55 (1985).
4. V. V. Sapunov and G. D. Egorova, Khim. Fiz.,8, No. 3, 343–346 (1989).
5. H. Linschitz and K. Sarkanen, J. Amer. Chem. Soc.,80, 4826–4832 (1958).