%0 Journal Article %A Morchadi, Radouan %A Sajid, Saïd %T A viability result for a first-order differential inclusion. %J Portugaliae mathematica %D 2006 %P 11-21 %V 63 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_2006__63_1_52968/ %G en %F PORMA_2006__63_1_52968