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@article{DE_1967_3_9_a2, author = {L. V. Khokhlova}, title = {Bounded and oscillatory solutions of the system $\ddot x+g(x,\,\dot x)=\bar 0$}, journal = {Differencialʹnye uravneni\^a}, pages = {1437--1449}, publisher = {mathdoc}, volume = {3}, number = {9}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1967_3_9_a2/} }
L. V. Khokhlova. Bounded and oscillatory solutions of the system $\ddot x+g(x,\,\dot x)=\bar 0$. Differencialʹnye uravneniâ, Tome 3 (1967) no. 9, pp. 1437-1449. http://geodesic.mathdoc.fr/item/DE_1967_3_9_a2/