@Misc{ abbfig08, author = { Abbondandolo, Alberto and Figalli, Alessio }, title = { Invariant measures of Hamiltonian systems with prescribed asymptotic Maslov index }, journal = { Journal of Fixed Point Theory and Applications }, year = { 2008 }, pages = { }, URL = { http://cvgmt.sns.it/paper/680/ }, note = { cvgmt preprint} }