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@article{DE_1981_17_5_a25, author = {E. B. Frolov}, title = {A criterion for the attainability of nonlinear systems given on manifolds}, journal = {Differencialʹnye uravneni\^a}, pages = {944--948}, publisher = {mathdoc}, volume = {17}, number = {5}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1981_17_5_a25/} }
E. B. Frolov. A criterion for the attainability of nonlinear systems given on manifolds. Differencialʹnye uravneniâ, Tome 17 (1981) no. 5, pp. 944-948. http://geodesic.mathdoc.fr/item/DE_1981_17_5_a25/