%0 Journal Article %A G. Stampacchia %T On the filtration of a~fluid through a~porous medium with variable %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1974 %P 89-102 %V 29 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1974_29_4_a2/ %G en %F RM_1974_29_4_a2