1. Chien, I. L., & Fruehauf, P. S., (1990). Considering tuning to improve controller performance. Chem. Eng. Prog., October, 33–41.
2. Theoretical considerations for automatic controllers;Cohen;Transactions of the ASME,1953
3. Green, M., & Limebeer, D. J. N. (1995). Linear robust control. Englewood Cliffs, NJ: Prentice-Hall.
4. Polynomial solution of the 31/2–DOF H2/H∞ feedforward control problem;Grimble;IEE Proceedings of the Control Theory,1999
5. Morari, M., & Zafiriou, E. (1989). Robust process control. Englewood Cliffs, NJ: Prentice-Hall.