1. Stability for a nonlinear second order ODE;Moroşanu;Funkcial. Ekvac.,2005
2. Stability for a damped nonlinear oscillator;Moroşanu;Nonlinear Anal.,2005
3. C. Vladimirescu, Stability for a system of 1-D coupled damped nonlinear oscillators, submitted for publication.
4. A note on stability by Schauder’s theorem;Burton;Funkcial. Ekvac.,2001
5. On the stability of the zero solution of certain second order nonlinear differential equations;Hatvani;Acta Sci. Math.,1971