%0 Journal Article %A Manlio Bordoni %T Spectral estimates for Schrödinger and Dirac-type operators on Riemannian manifolds. %J Mathematische Annalen %D 1994 %P 693-718 %V 298 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1994__298_2_165192/ %F MAN_1994__298_2_165192