1. Afrken, G., 1985,Mathematical Methods for Physicists, 3rd edn., Academic Press, San Diego, CA.
2. Boone, J. P. and Yip, S. 1980,Molecular Hydrodynamics, McGraw-Hill, New York.
3. Cushman, J. H., 1991, On diffusion in fractal porous media,Water Resourc. Res. 27, 643?644.
4. Dieulin, A., Matheron, G. and de Marsily, G. 1981a, Growth of the dispersion coefficient with the mean travelled distance in porous media,Sci. Total Environ.,21, 319?328.
5. Dieulin, A., Matheron, G., de Marsily, G. and Beaudoin, B., 1981b, Time dependence of an ?equivalent dispersion coefficient? for transport in porous media, in A. Verruijt and F. B. J. Barends (eds.),Proc. Euromech 143, Delft 1981, Balkema, Rotterdam, The Netherlands, pp. 199?202.