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@article{DAN_1984_279_2_a0, author = {A. A. Agrachev and S. A. Vakhrameev}, title = {Nonlinear control systems of constant rank and bang-bang}, journal = {Doklady Akademii Nauk}, pages = {265--269}, publisher = {mathdoc}, volume = {279}, number = {2}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1984_279_2_a0/} }
A. A. Agrachev; S. A. Vakhrameev. Nonlinear control systems of constant rank and bang-bang. Doklady Akademii Nauk, Tome 279 (1984) no. 2, pp. 265-269. http://geodesic.mathdoc.fr/item/DAN_1984_279_2_a0/