%0 Journal Article %A C. G. Li %A M. Kostić %A M. Li %T Abstract Multi-term Fractional Differential Equations %J Kragujevac Journal of Mathematics %D 2014 %P 51 %V 38 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/KJM_2014_38_1_a3/ %G en %F KJM_2014_38_1_a3