@article{DE_2000_36_1_a2,
     author = {A. I. Astrovskii and I. V. Gaishun},
     title = {Uniformly observable linear nonstationary systems with many outputs and their canonical forms},
     journal = {Differencialʹnye uravneni\^a},
     pages = {18--25},
     year = {2000},
     volume = {36},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2000_36_1_a2/}
}