%0 Journal Article %A O. A. Zadvornov %T Investigation of a~nonlinear stationary problem of filtration in the presence of a~point source %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 2005 %P 58-63 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_2005_1_a6/ %G ru %F IVM_2005_1_a6