Bogoviz, Aleksei Valentinovich, et al. “A Comprehensive Analysis of Energy Security in the Member States of the Eurasian Economic Union, 2000-2014”. International Journal of Energy Economics and Policy, vol. 7, no. 5, Nov. 2017, pp. 93-101, https://econjournals.org.tr/index.php/ijeep/article/view/5447.