R. Taviv and  A.C. Brent and  H. Fortuin,  An Environmental Impact Tool to Assess National Energy Scenarios.   journal   = {International Journal of Energy and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2009, vol. 27(3). 89 - 94
    [viewed 26 January 2020]. Available from: https://publications.waset.org/pdf/6530.