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3. Multiphase flow in porous media: mechanics, mathematics, and numerics;Allen,1988
4. Well conditioned iterative schemes for mixed finite- element models of porous-media flows;Allen;SIAM J Sci Stat Comp,1992
5. Diffusion on viscous fluids. Existence and asymptotic properties of solutions;Beirao da Veiga;Ann Scuola Norm Sup Pisa,1983