Abdellatif Kasbi and  Abderrafii Rahali,  Design a Fractional Order Controller for Power Control of Doubly Fed Induction Generator Based Wind Generation System.   journal   = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2019, vol. 152(8). 585 - 591
    [viewed 20 November 2019]. Available from: https://publications.waset.org/pdf/10010674.