TY - JOUR AU - A. S. Makin TI - The basis property of Abel-Poisson means of spectral decompositions corresponding to a strongly elliptic differential operator JO - Doklady Akademii Nauk PY - 1983 SP - 281 EP - 284 VL - 269 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1983_269_2_a4/ LA - ru ID - DAN_1983_269_2_a4 ER -