Cerović, Ljerka, et al. “From the Restructuring of the Power Sector to Diversification of Renewable Energy Sources: Preconditions for Efficient and Sustainable Electricity Market”. International Journal of Energy Economics and Policy, vol. 4, no. 4, Aug. 2014, pp. 599-0, https://mail.econjournals.com/index.php/ijeep/article/view/876.