1. (1) K. Åström, T. Hägglund, CC Hang, and WK Ho: “Automatic tuning and adaptation for PID controllers-a survey”, Control Engineering Practice, Vol. 1, No. 4, pp. 694-714 (1993)
2. (2) K. Åström and T. Hägglund: “Research Triangle Park, NC 27709”, Advanced PID Control, The Instrumentation, Systems, and Automation Society (2005)
3. (3) S. Bennett: “The past of pid controllers”, Annual reviews in control, Vol. 25, pp. 43-53 (2001)
4. (5) F. Kawai, C. Nakazawa, K. Vinther, H. Rasmussen, P. Andersen, and J. Stoustrup: “An Industrial Model Based Disturbance Feedback Control Scheme”, Proc. The 19th World Congress of the International Federation of Automatic Control (IFAC 2014), Cape Town, August, pp. 804-809 (2014)
5. (6) K. Zhou, J. C. Doyle, and K. Glover: Prentice Hall, Robust and Optimal Control (1995)