Partial hyperbolicity for symplectic diffeomorphisms Vanderlei Horita, Ali Tahzibi (2006) Annales de l'I.H.P. Analyse non linéaire
Periodic points of Hamiltonian surface diffeomorphisms. Franks, John, Handel, Michael (2003) Geometry & Topology
Periodic solutions for subquadratic discrete Hamiltonian systems. Deng, Xiaoqing (2007) Advances in Difference Equations [electronic only]
Properties of Pseudo-holomorphic Curves in Symplectisations II: Embedding Controls and Algebraic Invariants. H. Hofer, K. Wysocki, E. Zehnder (1995) Geometric and functional analysis
Properties of pseudoholomorphic curves in symplectisations. I : asymptotics H. Hofer, K. Wysocki, E. Zehnder (1996) Annales de l'I.H.P. Analyse non linéaire
Pseudoholomorphic curves in symplectizations with applications to the Weinstein conjecture in dimension three. H. Hofer (1993) Inventiones mathematicae