WASET
    Wenhao Wang and  Xinzhi Xu and  Limin Feng and  Wei Cong,  A Comparative Study of Global Power Grids and Global Fossil Energy Pipelines Using GIS Technology.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2020, vol. 159(3). 53 - 58
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10011103.