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@article{DE_1973_9_11_a21, author = {V. M. Marchenko}, title = {The algebraic basis for a certain controllability criterion}, journal = {Differencialʹnye uravneni\^a}, pages = {2088--2091}, publisher = {mathdoc}, volume = {9}, number = {11}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1973_9_11_a21/} }
V. M. Marchenko. The algebraic basis for a certain controllability criterion. Differencialʹnye uravneniâ, Tome 9 (1973) no. 11, pp. 2088-2091. http://geodesic.mathdoc.fr/item/DE_1973_9_11_a21/