@article{DE_1998_34_6_a1,
     author = {I. V. Gaishun},
     title = {Existence of canonical forms of linear time-dependent control systems with respect to an exponential group},
     journal = {Differencialʹnye uravneni\^a},
     pages = {727--734},
     publisher = {mathdoc},
     volume = {34},
     number = {6},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_6_a1/}
}