1. S. Koda and K. Sugimoto, J. Photochem. and Photobiol. C 4, 215 (2003).
2. A. Horowitz, W. Schneider, and G. K. Moortgat, J. Phys. Chem. 94, 2904 (1989).
3. V. I. Andrukhiv, V. V. Bertsev, M. O. Bulanin, et al., Opt. Spektrosk. 76(1), 165 (1994) [Opt. Spectrosc. 76 (1), 150 (1994)].
4. V. I. Dianov-Klokov, Opt. Spectrosk. 21, 413 (1966).
5. G. Ya. Zelikina, V. V. Bertsev, and M. B. Kiseleva, Opt. Spektrosk. 77(3), 579 (1994) [Opt. Spectrosc. 77 (3), 513 (1994)].