SMUTEK, Jan Maciej; ŁONYSZYN, Przemysław. Cross-border issues in Polish supraregional strategies on example of strategies of Western and Eastern Poland. Journal of Geography, Politics and Society, [S. l.], v. 6, n. 2, p. 32–44, 2016. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/JGPS/article/view/3705. Acesso em: 9 may. 2024.