TY - JOUR AU - V. B. Lidskii TI - On the completeness of a system of eigen elements and adjoint elements of a compacte operator JO - Doklady Akademii Nauk PY - 1957 SP - 234 EP - 236 VL - 115 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1957_115_2_a8/ LA - ru ID - DAN_1957_115_2_a8 ER -