%0 Journal Article %A Herbert Amann %A Eduard Zehnder %T Periodic Solutions of Asymptotically Linear Hamiltonian Systems. %J Manuscripta mathematica %D 1980 %P 149-190 %V 32 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1980__32_154723/ %F MM2_1980__32_154723