%0 Journal Article %A I. B. Badriev %A O. A. Zadvornov %T Analysis of the Stationary Filtration Problem with a Multivalued Law in the Presence of a Point Source %J Differencialʹnye uravneniâ %D 2005 %P 874-880 %V 41 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2005_41_7_a1/ %G ru %F DE_2005_41_7_a1