1. Sliding Mode Control: Theory and Applications;Edwards,1998
2. Digital Control of Dynamic Systems;Franklin,1990
3. Robust control using a state space disturbance observer;Lee;Proc. IEEE Conference on Decision and Control.,2003
4. Design of a servomechanism with sliding mode for disk drives;Lee;Proc. IEEE Conference on Decision and Control.,1999
5. Analysis and design of servomechanism and its application to disk drives;Lee;IEEE Trans. Control Systems Technology,2003