1. Bell, R.B. and K.J. Astrom (1987). Dynamic models for boiler-turbine-alternator units : data logs and parameter estimation for a 160 MW unit, Report TFRT-3192, Lund Institute of Technology, Sweden.
2. Guaranteed margins for LQG regulators;Doyle;IEEE Trans. Auto. Contr.,1978
3. Robustness with observers;Doyle;IEEE Trans. Auto. Contr.,1979
4. Multivariable feedback design : concepts for a classical/modem synthesis;Doyle;IEEE Trans. Auto. Contr.,1981
5. A design technique for linear multivariable feedback system;Facfarlane;Int. J. Contr.,1977