TY - JOUR AU - A. V. Babin TI - Polynomial solvability of differential equations with coefficients from classes of infinitely differentiable functions JO - Matematičeskie zametki PY - 1983 SP - 249 EP - 260 VL - 34 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1983_34_2_a10/ LA - ru ID - MZM_1983_34_2_a10 ER -