Witkowski, Piotr. “Cross-Border Cooperation Between the European Union and Neighbouring Countries. Practical Facilitations in the Form of Local Border Traffic”. Regional Barometer. Analyses & Prognoses 12, no. 1 (June 9, 2014): 7–14. Accessed November 22, 2024. https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/1072.