1. Probleme General de la Stabilité du Mouvment;Lyapunov,1947
2. Dynamical Systems;Birkhoff,1927
3. A multiplicative ergodic theorem: Lyapunov characteristic numbers for dynamical systems;Oseledec;Trans. Mosc. Math. Soc.,1968
4. Chaotic behavior of multidimensional difference equations;Kaplan,1978
5. Complex Oscillations in Simple Systems;Anishchenko,1990