TY - JOUR AU - V. B. Lidskii TI - Theorems on the completeness of a system of characteristic and adjoined elements of operators having a discrete spectrum JO - Doklady Akademii Nauk PY - 1958 SP - 1088 EP - 1091 VL - 119 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1958_119_6_a7/ LA - ru ID - DAN_1958_119_6_a7 ER -