KOCSIS, K.; TINER, T. Geopolitics of pipelines and Eastern Europe with especial regard to Hungary. Hungarian Geographical Bulletin, [S. l.], v. 58, n. 1, p. 49–67, 2009. Disponível em: https://ojs.mtak.hu/index.php/hungeobull/article/view/3133. Acesso em: 31 oct. 2026.