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@article{DE_1971_7_2_a2, author = {Yu. I. Domshlak}, title = {The oscillatoriness of the solutions of second order differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {205--214}, publisher = {mathdoc}, volume = {7}, number = {2}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1971_7_2_a2/} }
Yu. I. Domshlak. The oscillatoriness of the solutions of second order differential equations. Differencialʹnye uravneniâ, Tome 7 (1971) no. 2, pp. 205-214. http://geodesic.mathdoc.fr/item/DE_1971_7_2_a2/