WASET
    Semanur SoyyiÄŸit Kaya and  Ercan Eren,  Complex Network Approach to International Trade of Fossil Fuel.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2016, vol. 109(1). 52 - 60
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10003314.