MATERSKI, W. The Problem of Boundary between the Soviets and Finland, 1917–1922. Dzieje Najnowsze, [S. l.], v. 50, n. 4, p. 5–30, 2019. DOI: 10.12775/DN.2018.4.01. Disponível em: https://apcz.umk.pl/DN/article/view/DN.2018.4.01. Acesso em: 18 jul. 2024.