%0 Journal Article %A Chokri Abdelkefi %A Bechir Amri %A Mohamed Sifi %T Pseudo-Differential Operator Associated with the Bessel Operator %J Mathematica balkanica %D 2007 %P 79 %V 21 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_2007_21_1-2_a7/ %F MABA_2007_21_1-2_a7