@article{DE_1975_11_3_a2,
     author = {K. A. Dib},
     title = {Stability of the exponents and structurally stable properties of $n$th order linear differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {429--444},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_3_a2/}
}