SHVYDKYI, O. The development of gas market in the modern Ukrainian energy strategy. Skhid, [S. l.], n. 6(126), p. 186–191, 2014. DOI: 10.21847/1728-9343.2013.6(126).20639. Disponível em: http://skhid.kubg.edu.ua/article/view/20639. Acesso em: 30 nov. 2021.