@article{DE_1975_11_4_a22,
     author = {A. L. Skubachevskii},
     title = {A certain property of the solutions of a second order linear differential equation of unstable type with retarded argument},
     journal = {Differencialʹnye uravneni\^a},
     pages = {760--761},
     publisher = {mathdoc},
     volume = {11},
     number = {4},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_4_a22/}
}