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@article{MZM_1967_2_3_a8, author = {Yu. V. Komlenko}, title = {Chaplygin's theorem for a second-order linear differential equation with retarded argument}, journal = {Matemati\v{c}eskie zametki}, pages = {301--306}, publisher = {mathdoc}, volume = {2}, number = {3}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1967_2_3_a8/} }
Yu. V. Komlenko. Chaplygin's theorem for a second-order linear differential equation with retarded argument. Matematičeskie zametki, Tome 2 (1967) no. 3, pp. 301-306. http://geodesic.mathdoc.fr/item/MZM_1967_2_3_a8/