%0 Journal Article %A Chukwu, Ethelbert N. %T On the reachable sets of non-autonomous linear control systems %J Portugaliae mathematica %D 1975 %P 91-103 %V 34 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1975__34_2_115253/ %G en %F PORMA_1975__34_2_115253