TY - JOUR AU - S. Ya. Yakubov TI - Multiple completeness for systems of operator bundles and elliptic boundary value problem JO - Sbornik. Mathematics PY - 1991 SP - 99 EP - 119 VL - 69 IS - 1 UR - http://geodesic.mathdoc.fr/item/SM_1991_69_1_a6/ LA - en ID - SM_1991_69_1_a6 ER -