Yilmaz, Mustafa Kemal, Necla I. Kucukcolak, and R. Ali Kucukcolak. 2018. “Market Efficiency and Risk Premium in the Turkish Wholesale Electricity Market”. International Journal of Energy Economics and Policy 8 (5):76-88. https://mail.econjournals.com/index.php/ijeep/article/view/6648.