WASET
    Yassine Jadi and  Lin Jie,  An Efficiency Measurement of E-Government Performance for United Nation Ranking Index.   journal   = {International Journal of Humanities and Social Sciences}, [online]. World Academy of Science, Engineering and Technology.
    June 2017, vol. 121(1). 279 - 282
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/10007669.