%0 Journal Article %A Harold Donnelly %T Lower Bounds for Eigenfunctions on Riemannian Manifolds. %J Mathematische Annalen %D 1987 %P 653-672 %V 279 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1987__279_3_164345/ %F MAN_1987__279_3_164345