ПЕТРЕНКО, В. П. Economik and management science in the oil and gas industry of Ukraine: state, drawbacks, ways of improving. 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. 11, p. 7–9, 2015. Disponível em: https://eung.nung.edu.ua/index.php/ecom/article/view/134. Acesso em: 21 nov. 2024.