1. Rocket Propulsion Elements: An Introduction to the Engineering of Rockets;Sutton,1986
2. Relay Control Systems;Tsypkin,1984
3. Multiple-Input Describing Functions and Nonlinear System Design;Gelb,1968
4. Control Systems of Variable Structure;Itkis,1976
5. Variable Structure Systems with Sliding Modes;Utkin;IEEE Transactions on Automatic Control,1977