1. J. Pysiak, B. Cybulska and B. Pacewska, Papers prepared for the St. Bretsznajder II all-Polish Seminar, Płock, 1979.
2. S. Brunauer, P. H. Emmett and E. J. Teller, J. Am. Chem. Soc., 60 (1938) 309.
3. D. M. Young and A. D. Crowell, Physical Adsorption of Gases, PWN, Warsaw, 1968.
4. W. S. Komarow, Adsorbents and their Properties, Mińsk, Science and Technique, 1977.
5. D. Dollimore and G. R. Heal, J. Appl. Chem., 14 (1964) 109.