KOGUT, O. Ivano-Frankivsk Institute of Oil and Gas - a centre of scientific-technical work and industrial relations of Ukraine. Skhid, [S. l.], n. 1(133), 2015. DOI: 10.21847/1728-9343.2015.1(133).40094. Disponível em: https://skhid.kubg.edu.ua/article/view/40094. Acesso em: 26 apr. 2024.