TY - JOUR AU - S. G. Kal'nei TI - Summability of Jacobi series by triangular matrices JO - Matematičeskie zametki PY - 1983 SP - 91 EP - 103 VL - 34 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1983_34_1_a7/ LA - ru ID - MZM_1983_34_1_a7 ER -