1. I. Langmuir, Am. Chem. Soc 40, 1361 (1918)
2. M. Jaroniec, R. Madey, Physical Adsorption on Heterogeneous Surfaces (Elsevier, Amsterdam, 1988), pp. 25–26
3. S. Umeda, S. Teranishi, K. Tarama, Bull. Inst. Chem. Res. Kyoto Univ. 32, 109 (1954)
4. W. Rudzinski, D.H. Everett, Adsorption of Gases on Heterogeneous Surfaces (Academic Press, London, 1992)
5. J. Tóth, in Adsorption. Theory, Modeling, and Analysis, ed. by J. Tóth (Marcel Dekker Inc, New York, 2002)