TY - JOUR AU - E. G. Sheshukov TI - The behavior of the solutions of nonlinear filtration problems near a~curve of degeneracy of the domain of the hodograph of the velocity JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1974 SP - 114 EP - 119 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1974_4_a15/ LA - ru ID - IVM_1974_4_a15 ER -