@article{DE_1972_8_6_a19,
     author = {I. V. Kamenev},
     title = {The nonoscillatoriness of the solutions of a second order linear differential equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1108--1110},
     publisher = {mathdoc},
     volume = {8},
     number = {6},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1972_8_6_a19/}
}