%0 Journal Article %A Helmut Hofer %A John Toland %T Homoclinic, Heteroclinic, and Periodic Orbits for a Class of Indefinite Hamiltonian Systems. %J Mathematische Annalen %D 1984 %P 387-404 %V 268 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1984__268_182927/ %F MAN_1984__268_182927