1. Yukitomo M, Shigemasa T, Baba Y, Kojima F. A two degrees of freedom PID control system, its features and applications. In: 5th Asian control conference. Vol. 1. July 2004. p. 456–59.
2. Modern control systems;Dorf,2005
3. Analog & digital control system design: transfer-function, state-space, & algebraic methods;Chen,2006
4. Revisiting the Ziegler–Nichols step response method for PID control;Åström;Journal of Process Control,2004
5. Wang Z-Y, Zhao Z-X, Qin Y, Jai L-M. A new predictive PID control algorithm. In: International conference on educational and network technology. June 2010. p. 251–53.