1. Robust control: Systems with uncertain physical parameters;Ackermann,1993
2. Structure and synthesis of PID controllers;Datta,2000
3. Ho, M., Datta, A., & Bhattacharya, S. (1998). Design of P, PI and PID controller for interval plants. In Proceedings of the American control conference, Philadelphia (pp. 2496–2501).
4. Munro, N., & Solyemez, M.T. (2000). Fast calculation of stabilizing PID controllers for uncertain parameter systems. In Proceedings of 3rd IFAC symposium on robust control design, Prague, Czech Republic, 2000.