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@article{DE_1999_35_1_a3, author = {I. V. Gaishun}, title = {Controllability of the characteristic vectors of linear time-dependent systems}, journal = {Differencialʹnye uravneni\^a}, pages = {24--29}, publisher = {mathdoc}, volume = {35}, number = {1}, year = {1999}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1999_35_1_a3/} }
I. V. Gaishun. Controllability of the characteristic vectors of linear time-dependent systems. Differencialʹnye uravneniâ, Tome 35 (1999) no. 1, pp. 24-29. http://geodesic.mathdoc.fr/item/DE_1999_35_1_a3/