PREYGER, David; OMELCHENKO, Vladimir. CASPIAN DILEMMA: HOW TO DELIVER BLUE FUEL TO THE EUROPEAN MARKET. CENTRAL ASIA AND THE CAUCASUS, Delhi, India, v. 6, n. 3, p. 120–128, 2005. Disponível em: https://ca-c.org/CAC/index.php/cac/article/view/782.. Acesso em: 15 may. 2025.