1. The onset of chaotic motions of a moored semi-submersible;Bishop,1987
2. Nonlinear Ordinary Differential Equations;Jordan,1977
3. Nonlinear Dynamics and Chaos;Thompson,1986
4. Response and Stability;Pippard,1985
5. Nonlinear Oscillations, Dynamical Systems, and Bifurcations of Vector Fields;Guckenheimer,1983