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@article{DE_1979_15_11_a21, author = {Yu. K. Lando}, title = {The principle of conjugate correspondence and rank tests of controllability}, journal = {Differencialʹnye uravneni\^a}, pages = {2095--2097}, publisher = {mathdoc}, volume = {15}, number = {11}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1979_15_11_a21/} }
Yu. K. Lando. The principle of conjugate correspondence and rank tests of controllability. Differencialʹnye uravneniâ, Tome 15 (1979) no. 11, pp. 2095-2097. http://geodesic.mathdoc.fr/item/DE_1979_15_11_a21/