%0 Journal Article %A E. G. Sheshukov %T The behavior of the solutions of nonlinear filtration problems near a~curve of degeneracy of the domain of the hodograph of the velocity %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1974 %P 114-119 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1974_4_a15/ %G ru %F IVM_1974_4_a15