TY - JOUR AU - Yu. A. Dubinskii TI - Sobolev spaces of infinite order on the torus and some questions in the theory of periodic solutions of differential equations JO - Doklady Akademii Nauk PY - 1975 SP - 269 EP - 272 VL - 222 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1975_222_2_a1/ LA - ru ID - DAN_1975_222_2_a1 ER -