TY - JOUR AU - A. G. Kostyuchenko AU - A. A. Shkalikov TI - Summability of eigenfunction expansions of differential operators and convolution operators JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1978 SP - 24 EP - 40 VL - 12 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1978_12_4_a2/ LA - ru ID - FAA_1978_12_4_a2 ER -