TY - JOUR AU - B. S. Kashin AU - I. V. Limonova TI - Selecting a~dense weakly lacunary subsystem in a~bounded orthonormal system JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 2019 SP - 956 EP - 958 VL - 74 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_2019_74_5_a8/ LA - en ID - RM_2019_74_5_a8 ER -