WASET
    Olga Orynycz and  Andrzej Wasiak ,  The Effects of Plantation Size and Internal Transport on Energy Efficiency of Biofuel Production.   journal   = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2017, vol. 129(9). 979 - 984
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/10007809.