WASET
    Wen-Yen Wu and  Tsung-Cheng Hsieh and  Ching-Sung Lai,  Extracting Road Signs using the Color Information.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2007, vol. 8(8). 2391 - 2395
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/890.