TY - JOUR AU - M. N. Mishra AU - S. K. Acharya TI - Characterization of the Upper and the Lower Classes for Diffusion Processes in Terms of Convergence Rates JO - Mathematica balkanica PY - 1993 SP - 285 VL - 7 IS - 3-4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MABA_1993_7_3-4_a10/ ID - MABA_1993_7_3-4_a10 ER -