1. A. V. Kiselev and Ya. I. Yashin, in Gas Adsorption Chromatography (Nauka, Moscow, 1976), p. 256 [in Russian].
2. G. D. Parfitt, in Progress in Surface Membrane Science (NP, London, 1976), Vol. 11, p. 181.
3. Experimental Methods in Adsorption and Molecular Chromatography, Ed. by Yu. S. Nikitin and R. S. Petrova (Mosk. Gos. Univ., Moscow, 1990) [in Russian].
4. J. B. Donnet and S. J. Park, Carbon 29, 955 (1991).
5. V. Gutmann, Coord. Chem. Rev. 18, 225 (1991).