WASET
    Yeong-Hwa Chang and  Chia-Wen Chang and  Hung-Wei Lin and  C.W. Tao,  Fuzzy Controller Design for Ball and Beam System with an Improved Ant Colony Optimization.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2009, vol. 32(8). 1578 - 1583
    [viewed 04 May 2024]. Available from: https://publications.waset.org/pdf/5698.