Дзьоба, О. Г. “About Some Aspects of Evaluation of Energy Security Taking into Account Subjects Risks of Fuel-Energy Complex”. Scientific Bulletin of Ivano-Frankivsk National Technical University of Oil and Gas (Series: Economics and Management in the Oil and Gas Industry), vol. 1, no. 13, May 2018, pp. 36-40, https://eung.nung.edu.ua/index.php/ecom/article/view/46.