1. PID Controllers: Theory, Design and Tuning;Astrom,1995
2. Design of PI controller for integrator/dead-time processes;Chidambaram;Hung. J. Ind. Chem.,1994
3. Chidambaram, M. (2000). Set point weighting PI/PID controller for integrating plus dead time processes. In: P. Kanagasabapathy, & R. Muthu (Eds.). Proceedings of the National Symposium on Intell. Measurement & Control, Madras, p. 324.
4. Consider IMC tuning to improve performance;Chien;Chem. Eng. Prog.,1990
5. Auto-tuning of multi-loop control system;Friman;Ind. Eng. Chem. Res.,1994