%0 Journal Article %A M. Kashiwara %T B-Functions and Holonomic Systems. Rationality of Roots of B-Functions %J Inventiones mathematicae %D 1976 %P 33-54 %V 38 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1976__38_142441/ %F IM_1976__38_142441