WASET
    V. Ten,  Design of Nonlinear Robust Control in a Class of Structurally Stable Functions.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2009, vol. 31(7). 1851 - 1859
    [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/11027.