%0 Journal Article %A Ahmad, Bashir %A Ntouyas, Sotiris K. %T Initial-value problems for hybrid Hadamard fractional differential equations %J Electronic Journal of Differential Equations %D 2014 %V 2014 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2014__2014__a159/ %G en %F EJDE_2014__2014__a159