PALMOWSKI, Tadeusz. Problems of Cross-Border Cooperation Between Poland and the Kaliningrad Oblast of the Russian Federation. Quaestiones Geographicae, [S. l.], v. 29, n. 4, p. 75–82, 2010. DOI: 10.2478/v10117-010-0033-2. Disponível em: https://pressto.amu.edu.pl/index.php/qg/article/view/v10117-010-0033-2. Acesso em: 19 may. 2024.