Randeep Kaur and  Jyoti Ohri,  PSO Based Weight Selection and Fixed Structure Robust Loop Shaping Control for Pneumatic Servo System with 2DOF Controller.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2014, vol. 92(8). 1365 - 1373
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10000127.