Christiono Utomo and  Arazi Idrus,  Value–based Group Decision on Support Bridge Selection.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2010, vol. 43(7). 1688 - 1693
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/15926.