@article{DE_1975_11_3_a5,
     author = {A. L. Skubachevskii},
     title = {The oscillatory solutions of a second order linear homogeneous differential equation with retarded argument},
     journal = {Differencialʹnye uravneni\^a},
     pages = {462--469},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_3_a5/}
}