TY - JOUR AU - V. P. Il'in TI - On some properties of classes of differentiable functions defined in a~domain JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1965 SP - 93 EP - 143 VL - 84 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_1965_84_a7/ LA - ru ID - TM_1965_84_a7 ER -