A. Jalil, Mohd Hafiz, et al. “Integration of Back Calculation Anti Windup and Smith Predictor on PID Controller for Varying Time Delay System With Input Constraint”. Applications of Modelling and Simulation, vol. 3, no. 2, July 2019, pp. 95-101, https://www.ojs.arqiipubl.com/index.php/AMS_Journal/article/view/44.