1. Sverdlova, O.V., Elektronnye spektry v organicheskoi khimii (Electron Spectra in Organic Chemistry), Leningrad: Khimiya, 1973.
2. Vilkov, L.V. and Pentin, Yu.A., Fizicheskie metody issledovaniya v khimii. Strukturnye metody i opticheskaya spektroskopiya (Physical Methods of Investigation in Chemistry. Structural Methods and Optical Spectroscopy), Moscow: Vysshaya Shkola, 1987.
3. Brodskii, A.I., Usp. Khim., 1932, vol. 1, p. 712.
4. Shinoda, K., Nakagawa, T., Tamamushi, B., and Isemura, T., Colloidal Surfactants. Some Physicochemical Properties, New York, 1963.
5. Terenin, A.N., Usp. Fiz. Nauk, 1937, vol. 17, p. 1.