1. Small denominators and problems of stability of motion in classical and celestical mechanics;Arnold;Russian Math. Surveys,1963
2. On invariant curves of area-preserving mappings of an annulus;Moser;Nachr. Akad. Wiss. Göttingen, Math.-Phys. Kl. II,1962
3. Nonlinear Oscillations, Dynamical Systems, and Bifurcations of Vector Fields;Guckenheimer,1983
4. Fractal distributions in conservative systems: Direct observations of the stable manifold;Vazquez;Physica,1987
5. A piecewise linear model for the zones of instability of area-preserving map;Devaney;Physica,1984