WASET
    Chun-Yao Lee and  Yi-Xing Shen,  Optimal Planning of Ground Grid Based on Particle Swam Algorithm.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2009, vol. 36(12). 2235 - 2242
    [viewed 02 May 2024]. Available from: https://publications.waset.org/pdf/2308.