1. Linstead, R.P., J. Chem. Soc., 1953, p. 2873.
2. Kopranenkov, V.N. and Luk’yanets, E.A., Russ. Chem. Bull., 1995, vol. 44, p. 2216.
3. Kopranenkov, V. N., Goncharova, L.S., and Lukyanets, E.A., Russ. J. Gen. Chem., 1977, vol. 47, p. 2143.
4. Stuzhin, P.A., Migalova, I.S., Berezin, B.D., and Lyubimov, A.V., Russ. J. Coord. Chem., 1994, vol. 20, p. 444.
5. Gurinovich, G.P., Sevchenko, A.N., and Solov’ev, K.N., Spektroskopiya khlorofilla i rodstvennykh soedinenii (Spectrocopy of Chlorophyll and Related Compounds), Minsk: Nauka i Tekhnika, 1968.