1. R. I. Soltanov, E. A. Paukshtis, E. N. Yurchenko: Kinet. Katal.,23, 164 (1982).
2. A. V. Kiselve, V. I. Lygin: IR Spectra of Surface Compounds. Nauka, Moskva 1972.
3. P. J. Fenelon, H. E. Rubalcava: J. Chem. Phys.,51, 961 (1969).
4. J. W. Ward: Chemistry of Zeolites and Catalysis on Zeolites, Vol. 1, p. 234. Mir, Moskva 1980.
5. The Chemist's Companion, Vol. 1, p. 780. Goskhimizdat, Moskva 1963.