WASET
    Nan Li and  Ying Wang,  Measuring the Development Level of Chinese Regional Service Industry: An Empirical Analysis based on Entropy Weight and TOPSIS.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2012, vol. 68(8). 1982 - 1988
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/6015.