REGINIA-ZACHARSKI, J. Ukrainian Issues in Geopolitical Thought of the Twentieth and Twenty-first Centuries. International Studies. Interdisciplinary Political and Cultural Journal, [S. l.], v. 18, n. 2, p. 5–39, 2016. DOI: 10.1515/ipcj-2016-0008. Disponível em: https://czasopisma.uni.lodz.pl/international/article/view/1682. Acesso em: 17 maj. 2024.