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@article{DAN_1987_296_3_a1, author = {M. Gera}, title = {Some conditions for oscillation of a third-order linear differential equation}, journal = {Doklady Akademii Nauk}, pages = {525--528}, publisher = {mathdoc}, volume = {296}, number = {3}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1987_296_3_a1/} }
M. Gera. Some conditions for oscillation of a third-order linear differential equation. Doklady Akademii Nauk, Tome 296 (1987) no. 3, pp. 525-528. http://geodesic.mathdoc.fr/item/DAN_1987_296_3_a1/