1. Systems with Impulse Effects: Stability, Theory and Applications;Bainov,1989
2. Efficient bipedal robots based on passive-dynamic walkers;Collins;Science,2005
3. Kalman filtering with mixed discrete-continuous observations;De Nicolao;International Journal of Control,1998
4. Perturbation theorems for non-linear ordinary differential equations;Diliberto,1956
5. Regions of stability for limit cycle oscillations in piecewise linear systems;Goncalves;IEEE Transactions on Automatic Control,2005