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@article{DE_1980_16_5_a8, author = {V. T. Borukhov}, title = {Algebraic criterion for the controllability of a pencil of linear operators}, journal = {Differencialʹnye uravneni\^a}, pages = {888--893}, publisher = {mathdoc}, volume = {16}, number = {5}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1980_16_5_a8/} }
V. T. Borukhov. Algebraic criterion for the controllability of a pencil of linear operators. Differencialʹnye uravneniâ, Tome 16 (1980) no. 5, pp. 888-893. http://geodesic.mathdoc.fr/item/DE_1980_16_5_a8/