1. Z. Gerstel, Y. Chen, U. Mingelgrin and B. Yaron (editors), Toxic Organic Chemicals in Porous Media, Springer Verlag, Berlin 1989.
2. D. B. Fenn and M. M. Mortland, Proc. Intern. Clay Conf. Madrid (1972) 591.
3. S. Saltzman and S. Yariv, Soil Sci. Soc. Am. Proc., 39 (1975) 474.
4. C. N. R. Rao, Chemical Applications of Infrared Spectroscopy, Academic Press, New York 1963.
5. S. W. Bailey in Crystal Structures of Clay Minerals and Their X-ray Identification (G. W. Brindley and G. Brown, Editors), Mineralogical Society Monograph No. 5, London 1980, p. 1.