@article{DE_1977_13_12_a12,
     author = {V. A. Tyshkevich},
     title = {On the question of the stability of the solutions of linear differential equations with retarded argument},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2225--2233},
     publisher = {mathdoc},
     volume = {13},
     number = {12},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_12_a12/}
}