@article{DE_1990_26_3_a7,
     author = {S. A. Minyuk},
     title = {On the theory of complete controllability of linear time-dependent systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {414--420},
     publisher = {mathdoc},
     volume = {26},
     number = {3},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_3_a7/}
}