WASET
    M. Kargar and  A. Isazadeh and  F. Fartash and  T. Saderi,  Easy Shopping by Electronic Credit.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2008, vol. 14(2). 61 - 64
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/6445.