ЗАПУХЛЯК, І. Б. Components of the environment of functioning and development of the national gas transportation enterprises. Scientific Bulletin of Ivano-Frankivsk National Technical University of Oil and Gas (Series: Economics and Management in the Oil and Gas Industry), [S. l.], v. 1, n. 9, p. 55–61, 2014. Disponível em: https://eung.nung.edu.ua/index.php/ecom/article/view/191. Acesso em: 4 dec. 2024.