%0 Journal Article %A Sussmann, Héctor J. %T The control problem $\dot x=A(u)x$ %J Czechoslovak Mathematical Journal %D 1972 %P 490-494 %V 22 %N 3 %I mathdoc %U https://geodesic-test.mathdoc.fr/articles/10.21136/CMJ.1972.101117/ %R 10.21136/CMJ.1972.101117 %G en %F 10_21136_CMJ_1972_101117