%0 Journal Article %A Ryotaro Sato %T A general differentiation theorem for multiparameter additive processes %J Colloquium Mathematicum %D 2002 %P 143-155 %V 91 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm91-1-10/ %R 10.4064/cm91-1-10 %G en %F 10_4064_cm91_1_10