%0 Journal Article %A Jean-Michel Bismut %T The Atiyah-Singer index theorem for families of Dirac operators: Two heat equation proofs. %J Inventiones mathematicae %D 1986 %P 91-152 %V 83 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1986__83_143306/ %F IM_1986__83_143306