Giseob Byun and  Ji Yeon Cho and  Bong Gyou Lee,  Analyzing Convergence of IT and Energy Industry Based on Social System Framework.   journal   = {International Journal of Humanities and Social Sciences}, [online]. World Academy of Science, Engineering and Technology.
    June 2009, vol. 30(6). 1256 - 1261
    [viewed 29 September 2020]. Available from: https://publications.waset.org/pdf/7624.