1. [1] Arnold, V. I. Méthodes mathématiques de la mécanique classique, MIR, Moscou, 1974
2. Convexity and commuting Hamiltonians;Atiyah, M. F.;Bull. London Math. Soc.,1982
3. [3] Audin, M. The topology of torus actions on symplectic manifolds, Progress in Math., 93, Birkhäuser, 1991
4. Equivariant cohomology and Kähler geometry;Ginzburg, V. A.;Funktsional. Anal. i Prilozhen.,1987
5. [5] Gramain, A. Topologie des surfaces, PUF, Paris, 1971