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@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/} }
I. V. Kamenev. The nonoscillatoriness of the solutions of a second order linear differential equation. Differencialʹnye uravneniâ, Tome 8 (1972) no. 6, pp. 1108-1110. http://geodesic.mathdoc.fr/item/DE_1972_8_6_a19/