TY - JOUR AU - V. V. Zhikov TI - Certain functional methods in the theory of almost periodic solutions.~I JO - Differencialʹnye uravneniâ PY - 1971 SP - 215 EP - 225 VL - 7 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1971_7_2_a3/ LA - ru ID - DE_1971_7_2_a3 ER -