1. Stochastic Stability of Differential Equations;Hasminskii,1980
2. On the controllability of perturbed nonlinear systems;Klamka;IEEE Trans. Automat. Control,1975
3. Recurrence and invariant measures for degenerate diffusions;Kliemann;Ann. Probab.,1987
4. H. Kunita, Supports of diffusion processes and controllability problems, in: K. Itô (Ed.), Proceedings of International Symposium on SDE, Kyoto, 1976, pp. 163–185.
5. Linear System Theory;Rugh,1996