BÄCKER, Roman. Analysis of the Situation in Ukraine in Spring 2014. The Copernicus Journal of Political Studies, [S. l.], n. 2 (6), p. 227–232, 2018. DOI: 10.12775/cjps.2014.02.15. Disponível em: https://apcz.umk.pl/CJPS/article/view/cjps.2014.02.15. Acesso em: 2 lip. 2025.