1. V.I. Arnol’d. Nonlinear and Turbulent Processes in Physics, pages 1161–1174. Volume 3, R.Z. Sagdccv, Harwood. New York, edition, 1984.
2. V.I. Arnol’d and M.B. Sevryuk. Oscillations and bifurcations in reversible systems, chapter 2. pages 31–64. Nonlinear Phenomena in Plasma Physics and Hydrodynamics, R.Z. Sagdeev.Mir, 1986.
3. A. Delshams and P. Gutiérrez. Effective stability and KAM theory. January 1995. Preprint. To appear in J. Differential Equations.
4. F. Fassò. Lie series method for vector fields and hamiltonian perturbation theory. J. Appl. Math. Phys., (41): 843–864, 1990.
5. G. Gallavotti. Ergodicity, ensembles, irreversibility in boltzmann and beyond. 1994. Preprint. Archived in mp_arc@math.utexas.edu, #94-66.