Michal Polanský and  C. Ardil,  Robust Fuzzy Observer Design for Nonlinear Systems.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2011, vol. 53(5). 539 - 543
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9986.