TY - JOUR AU - Umarov, Sabir AU - Gorenflo, Rudolf TI - On Multi-Dimensional Random Walk Models Approximating Symmetric Space-Fractional Diffusion Processes JO - Fractional calculus and applied analysis PY - 2005 SP - 73 EP - 88 VL - 8 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FCAA_2005_8_1_a4/ LA - en ID - FCAA_2005_8_1_a4 ER -