WASET
    Samuel Capintero and  Ole H. Petersen,  Risk Allocation in Public-Private Partnership (PPP) Projects for Wastewater Treatment Plants.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2015, vol. 102(6). 1858 - 1862
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10001530.