WASET
    Mazidah Tajjudin and  Mohd Hezri Fazalul Rahiman and  Norhashim Mohd Arshad and  Ramli Adnan,  Robust Fractional-Order PI Controller with Ziegler-Nichols Rules.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2013, vol. 79(7). 1034 - 1041
    [viewed 09 May 2024]. Available from: https://publications.waset.org/pdf/16532.