1. Åström Karl Johan, Hägglund Tore. PID controllers: theory, design, and tuning. Vol. 2. Research Triangle Park, NC: Instrument Society of America; 1995.
2. How good are our controllers in absolute performance and robustness?;Shinskey;Meas Control,1990
3. Kim K, Basler MJ, Godhwani A. Supplemental control in a modern digital excitation system. In: 2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077), Singapore, vol. 1; 2000, p. 603–8, doi: 10.1109/PESW.2000.850082.
4. PID control in the third millennium;Vilanova,2012
5. Åström Karl Johan, Hägglund Tore, Astrom Karl J. Advanced PID control. Vol. 461. Research Triangle Park, NC: ISA-The Instrumentation, Systems, and Automation Society; 2006.