TY - JOUR AU - G. V. Radzievskii TI - Minimality, basis property and completeness of a subset of the root vectors of a quadratic operator pencil JO - Doklady Akademii Nauk PY - 1985 SP - 53 EP - 57 VL - 283 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1985_283_1_a11/ LA - ru ID - DAN_1985_283_1_a11 ER -