%0 Journal Article %A Ali Hakem %A Mohamed Berbiche %T Blow Up Results for Fractional Differential Equations and Systems %J Publications de l'Institut Mathématique %D 2013 %P 173 %V _N_S_93 %N 107 %I mathdoc %U http://geodesic.mathdoc.fr/item/PIM_2013_N_S_93_107_a14/ %G en %F PIM_2013_N_S_93_107_a14