1. A tutorial on LQG/LTR methods;Athans,1986
2. Robust multivariable idle speed control;Baumgartner,1986
3. A C-A-D package for LTR design via time-scale structure and eigenvalue assignment;Chen,1989
4. Minimal order robust observer-based compensator;Dowdle,1982
5. Robustness with observers;Doyle;IEEE Trans. Aut. Control,1979