TY - JOUR AU - V. T. Borukhov TI - Algebraic criterion for the controllability of a pencil of linear operators JO - Differencialʹnye uravneniâ PY - 1980 SP - 888 EP - 893 VL - 16 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1980_16_5_a8/ LA - ru ID - DE_1980_16_5_a8 ER -