Nijander-Dudzińska, Agata, Demetriusz Wojakowski, and Artur Wołek. “Cross-Border Cooperation of Communes and Poviats in Southern Poland”. Border and Regional Studies 7, no. 4 (December 31, 2019): 129–144. Accessed December 21, 2024. https://czasopisma.uni.opole.pl/index.php/p/article/view/1120.