1. Automatic tuning of optimum PID controllers;Zhuang;IEE Proc Part D,1993
2. PID controllers: Theory, design, and tuning;Astrom,1995
3. Ho MT, Datta A, Bhattacharyya SP. A new approach to feedback stabilization. In: Proc of the 35th CDC, 1996. p. 4643–8.
4. Ho MT, Datta A, Bhattacharyya SP. A linear programming characterization of all stabilizing PID controllers. In: Proc of Amer contr conf, 1997.
5. Ho MT, Datta A, Bhattacharyya SP. A new approach to feedback design Part I: Generalized interlacing and proportional control, Department of Electrical Engineering, Texas A&M University, College Station, TX, Tech. Report TAMU-ECE97-001-A, 1997.