DHAKA, Ambrish. MACKINDER’S HEARTLAND AND THE LOCATION OF THE GEOPOLITICAL TETRAHEDRON. CENTRAL ASIA AND THE CAUCASUS, Delhi, India, v. 6, n. 4, p. 46–57, 2005. Disponível em: https://ca-c.org/index.php/cac/article/view/813.. Acesso em: 7 jul. 2025.