ÖST, H. Mackinder, Westermarck and the Åland Question. Journal of Autonomy and Security Studies, [S. l.], v. 1, n. 2, p. 148–159, 2017. Disponível em: https://jass.ax/index.php/jass/article/view/14. Acesso em: 5 may. 2024.