1. P. Pringsheim, Fluorescence and Phosphorescence [Russian translation], IL (1951).
2. S. Judenfred, Fluorescence Analysis in Biology and Medicine [Russian translation], Mir (1965).
3. J. Culvert and J. Pitts, Photochemistry [Russian translation], Mir (1968).
4. A. N. Terenin, Photochemistry of Dye Molecules and Natural Organic Compounds [in Russian], Nauka, Leningrad (1967).
5. Lars Lindquist, Arkiv Fur Kemi.,16, No. 8 (1960).