%0 Journal Article %A Umarov, Sabir %A Gorenflo, Rudolf %T On Multi-Dimensional Random Walk Models Approximating Symmetric Space-Fractional Diffusion Processes %J Fractional calculus and applied analysis %D 2005 %P 73-88 %V 8 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FCAA_2005_8_1_a4/ %G en %F FCAA_2005_8_1_a4