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(2) A. J. Katz and A. H. Thompson, "Fractal Sandstone Pores: Implications for Conductivity and Pore Formation," Physical Review Letters, Volume 54 (1985), Number 12: pp. 1325-1328.
(3) "Fractals and Rocks," The Technical Review (Schlumberger) Volume 36, Number 1.
(4) Po-zen Wong, "FRACTAL SURFACES IN POROUS MEDIA," AIP Conference Proceedings - March 25, 1987 - Volume 154, Issue 1, pp. 304-318.
(5) Allen G. Hunt, "PERCOLATION THEORETICAL TREATMENTS OF WATER RETENTION AND UNSATURATED HYDRAULIC CONDUCTIVITY: RELEVANCE TO WATER AND ENERGY FLUXES ACROSS THE LAND-AIR INTERFACE," CIRES, University of Colorado, Boulder, CO.
(6) Allen G. Hunt, "Continuum Percolation Theory for Water Rentention and Hydraulic Conductivity of Fractal Soils: Extension of the Critical Volume Fraction for Percolation and Extension to Non-Equilibrium," CIRES, University of Colorado, Boulder, CO.
(7) Annette Dathe and Martin Thullner, "The Relationship between fractal properties of solid matrix and pore space in porous media," Geoderma 129 (2005), pp. 279-290.