WASET
    R. Satish and  G. Raja Rao,  Design of Controllers to Control Frequency for Distributed Generation.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2014, vol. 86(2). 317 - 324
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9997592.