*P. Grathwohl: Diffusion in natural porous media: Contaminant transport, sorption/desorption and dissolution kinetics. Kluwer Academic Publishers, 1998, 
*R. K. M. Thambynayagam: The Diffusion Handbook: Applied Solutions for Engineers. McGraw-Hill, 2011, 
*van Brakel, J., Heertjes, P. M. (1974): Analysis of diffusion in macroporous media in terms of a porosity, a tortuosity and a constrictivity factor. Int. J. Heat Mass Transfer, 17: 1093–1103