1. Optimum settings for automatic controllers;Ziegler;Trans ASME,1942
2. Automatic tuning of simple regulators with specification on phase and amplitude margins;Astrom;Automatica,1984
3. Automatic Tuning of PID Controllers;Astrom,1988
4. Adaptive Control;Astrom,1989
5. Self-tuning Smith predictors for processes with long dead time;Hang,1995