%0 Journal Article %A T. B. Solomyak %T Methods of solution of certain filtration problems %J Differencialʹnye uravneniâ %D 1974 %P 721-729 %V 10 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1974_10_4_a16/ %G ru %F DE_1974_10_4_a16