F. Gökgöz and  M. E. Atmaca,  Financial Portfolio Optimization in Turkish Electricity Market via Value at Risk.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2016, vol. 119(11). 3725 - 3735
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10006078.