KURYLCHUK, N. The Olevsk Borderline as the Creation of the Polish-Soviet War. Kyiv Historical Studies, [S. l.], n. 1 (12), p. 142–149, 2021. DOI: 10.28925/2524-0757.2021.116. Disponível em: https://istorstudio.kubg.edu.ua/index.php/journal/article/view/276. Acesso em: 3 jul. 2024.