WASET
    Bin Mu and  Site Li and  Shijin Yuan,  Air Quality Forecast Based on Principal Component Analysis-Genetic Algorithm and Back Propagation Model.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2016, vol. 116(8). 899 - 906
    [viewed 08 May 2024]. Available from: https://publications.waset.org/pdf/10007076.