1. R.H. Abraham and J.E. Marsden. Foundations of Mechanics (2nd edition). Ben-jamin/Cummings, 1978.
2. J.F. Adams. Lectures on Lie Groups. Benjamin, New York, 1969.
3. V.I. Arnol’d. Geometrical Methods in the Theory of Ordinary Differential Equations. Springer-Verlag, 1983.
4. V.I. Arnol’d and A.B. Givental’. Symplectic geometry. In V.I. Arnol’d and S.P. Novikov, editors, Encyclopedia of Mathematical Sciences, Vol. 4, Dynamical Systems IV, pages 1–136. Springer-Verlag, 1990.
5. V.I. Arnol’d and M.B. Sevryuk. Oscillations and bifurcations in reversible systems. In R.Z. Sagdeev, editor, Nonlinear Phenomena in Plasma Physics and Hydrodynamics, pages 31–64. Mir, Moscow, 1986.