GÜRAN, Celal Barkan - UĞURLU, Umut - TAŞ, Oktay. Mean-Variance Portfolio Optimization of Energy Stocks Supported with Second Order Stochastic Dominance Efficiency. In Finance a úvěr : Czech Journal of Economics and Finance. - Praha : UK Praha, Fakulta sociálních věd, 2019. ISSN 2464-7683, 2019, roč. 69, č. 4, s. 366-383.