@article{DE_1977_13_11_a25,
     author = {D. N. Cheban},
     title = {On the question of the structural stability of linear systems of differential equations with almost periodic coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2099--2101},
     publisher = {mathdoc},
     volume = {13},
     number = {11},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_11_a25/}
}