1. V. I. Arnold, “Sur une propriété topologique des applications globalement canonique de la mécanique classique,” C. R. Acad. Sci. Paris, Sér. I,261, 3719–3722 (1965).
2. V. I. Arnold, Mathematical Methods of Classical Mechanics [in Russian], Nauka, Moscow (1974), Appendix 4.
3. V. I. Arnold, “First steps of symplectic topology,” Usp. Mat. Nauk,41, No. 6, 3–18 (1986).
4. V. I. Arnold and A. B. Givental', “Symplectic geometry,” in: Contemporary Problems in Mathematics. Dynamical Systems IV, VINITI, Moscow (1986).
5. C. Conley and E. Zehnder, “The Birkhoff-Lewis fixed point theorem and a conjecture of V. I. Arnold,” Invent. Math.,73, 33–49 (1983).