Андрусів, У. Я. (2018). Optimization of the Balance of Formation and Usage of Fuel and Energy Resources. Scientific Bulletin of Ivano-Frankivsk National Technical University of Oil and Gas (Series: Economics and Management in the Oil and Gas Industry), 2(14), 117–125. Retrieved from https://eung.nung.edu.ua/index.php/ecom/article/view/37