TY - JOUR AU - B. S. Kashin TI - Some properties of orthogonal convergence system JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1977 SP - 68 EP - 87 VL - 143 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_1977_143_a4/ LA - ru ID - TM_1977_143_a4 ER -