SERGEEV, Alexandr. KEY ASPECTS OF ECONOMIC EFFICIENCY AND COST OF NATURAL GAS PIPELINE TRANSPORTATION. 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. 7, p. 36–42, 2018. Disponível em: https://eung.nung.edu.ua/index.php/ecom/article/view/93. Acesso em: 7 may. 2024.