Obadi, Saleh Mothana, Igor Kosir, and Matej Korcek. “The Impact of Low Oil Prices on the Trade Balance of Balkan Countries and Their Energy Security”. Energy Economics Letters 4, no. 3 (August 7, 2017): 20–27. Accessed December 4, 2024. https://archive.aessweb.com/index.php/5049/article/view/159.