%0 Journal Article %A S. Kempfle %A I. Schaefer %T Physical Consistency of Fractional %J Mathematica balkanica %D 2004 %P 345 %V 18 %N 3-4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_2004_18_3-4_a13/ %F MABA_2004_18_3-4_a13