TY - JOUR AU - M. S. Agranovich TI - Summability of series in root vectors of non-self-adjoint elliptic operators JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1976 SP - 1 EP - 12 VL - 10 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1976_10_3_a0/ LA - ru ID - FAA_1976_10_3_a0 ER -