CZARNOMSKA, Anna. The importance of Gazprom for the Russian gas sector against the backdrop of changes in the Russian and global economy. International Business and Global Economy, [S. l.], v. 40, p. 19–26, 2021. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/IBage/article/view/7506. Acesso em: 19 maj. 2024.