The Floer Memorial Volume
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References [1] V.I. Arnold: Mathematical methods of classical mechanics,
Appendix 9, Springer (1978). [2] I. Ekeland and H. Hofer: Symplectic topology
and Hamiltonian dynamics I. Math. Zeit. 200 (1990), 355–378. [3] I. Ekeland and
H. Hofer: ...