Запухляк, І. Б. (2015) “Theoretical and applied aspects of of forming of value chain of gas transportation services in system of support of its competitiveness”, Scientific Bulletin of Ivano-Frankivsk National Technical University of Oil and Gas (Series: Economics and Management in the Oil and Gas Industry), 1(11), pp. 10–14. Available at: https://eung.nung.edu.ua/index.php/ecom/article/view/135 (Accessed: 21 November 2024).