upward

Mixtures

Gluzman S, Sornette D, Self-similar approximants of the permeability in heterogeneous porous media from moment equation expansions, Transport in Porous Media 71, 75 (2008)

Lee S B, Nakanishi H, Markov matrix analysis of random walks in disordered continuous media, PA 269, 378 (1999)

Balberg I, Binenbaum N, Cluster structure and conductivity of three-dimensional continuum systems, PRA 31, 1222 (1985)