TY - JOUR AU - K. S. Kazarian TI - On some questions in the theory of orthogonal series JO - Sbornik. Mathematics PY - 1984 SP - 269 EP - 285 VL - 47 IS - 1 UR - http://geodesic.mathdoc.fr/item/SM_1984_47_1_a14/ LA - en ID - SM_1984_47_1_a14 ER -