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@article{DE_1979_15_11_a4, author = {A. F. Zubova}, title = {Investigation of oscillations and stability}, journal = {Differencialʹnye uravneni\^a}, pages = {1960--1966}, publisher = {mathdoc}, volume = {15}, number = {11}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1979_15_11_a4/} }
A. F. Zubova. Investigation of oscillations and stability. Differencialʹnye uravneniâ, Tome 15 (1979) no. 11, pp. 1960-1966. http://geodesic.mathdoc.fr/item/DE_1979_15_11_a4/