TY - JOUR AU - A. N. Godunov TI - An existence and uniqueness theorem for differential equations in a~Hilbert space JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1976 VL - 31 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1976_31_5_a23/ LA - ru ID - RM_1976_31_5_a23 ER -