@article{DE_1974_10_10_a5,
     author = {V. M. Marchenko},
     title = {Minimal number of inputs of linear control systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1789--1796},
     publisher = {mathdoc},
     volume = {10},
     number = {10},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_10_a5/}
}