TY - JOUR AU - I. M. Mikheev TI - Lacunary subsystems of the trigonometric system of functions JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1975 VL - 30 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1975_30_4_a15/ LA - ru ID - RM_1975_30_4_a15 ER -