WASET
    Jyh-Cherng Chen and  Yu-Zen Lin and  Wei-Zhi Chen,  Waste to Biofuel by Torrefaction Technology.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2014, vol. 90(6). 545 - 548
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/9998528.