GALÁNTAI, Zoltán. LONG FUTURES AND TYPE IV CIVILIZATIONS. Periodica Polytechnica Social and Management Sciences, [S. l.], v. 12, n. 1, p. 83–89, 2004. Disponível em: https://www.pp.bme.hu/so/article/view/1660. Acesso em: 16 may. 2024.