Zhaojun Wang and  Zongdi Sun and  Zhiyuan Liu,  Risk Factors’ Analysis on Shanghai Carbon Trading .   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2017, vol. 131(11). 2709 - 2713
    [viewed 15 November 2019]. Available from: https://publications.waset.org/pdf/10008197.