TY - JOUR AU - I. V. Aliev TI - Completeness of a system of root elements of a fourth-order operator-differential equation JO - Differencialʹnye uravneniâ PY - 1999 SP - 313 EP - 318 VL - 35 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1999_35_3_a4/ LA - ru ID - DE_1999_35_3_a4 ER -