ЧУЧУК, Ю. В. Economic Evaluation of Efficiency of Gas Pumping Units. 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. 2, n. 12, p. 67–73, 2015. Disponível em: https://eung.nung.edu.ua/index.php/ecom/article/view/118. Acesso em: 23 nov. 2024.