WASET
    Shih-Hsu Wang and  Yuan-Yuan Cheng and  Ming-Tsung Lee and  Wei-Chih Wang,  Analysis of Cost Estimation and Payment Systems for Consultant Contracts in the US, Japan, China and the UK.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2012, vol. 65(5). 989 - 998
    [viewed 07 May 2024]. Available from: https://publications.waset.org/pdf/12847.