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@article{IVM_1978_10_a9, author = {K. A. Pupkov and E. B. Frolov}, title = {An attainability property for nonlinear systems on {manifolds.~I}}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {61--71}, publisher = {mathdoc}, number = {10}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1978_10_a9/} }
K. A. Pupkov; E. B. Frolov. An attainability property for nonlinear systems on manifolds.~I. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 10 (1978), pp. 61-71. http://geodesic.mathdoc.fr/item/IVM_1978_10_a9/