@article{DE_1977_13_2_a2,
     author = {N. N. Ladis},
     title = {Topological equivalence of hyperbolic linear systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {255--264},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_2_a2/}
}