KHALATOV, A. Energy security of Ukraine: is there a safety margin?. Visnyk of the National Academy of Sciences of Ukraine, [S. l.], n. 9, p. 24–33, 2017. DOI: 10.15407/visn2017.09.023. Disponível em: https://nasu-periodicals.org.ua/index.php/visnyk/article/view/6690. Acesso em: 13 nov. 2024.