TY - JOUR AU - V. V. Filippov TI - An axiomatic theory of spaces of solutions of ordinary JO - Doklady Akademii Nauk PY - 1985 SP - 304 EP - 308 VL - 280 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1985_280_2_a10/ LA - ru ID - DAN_1985_280_2_a10 ER -