Dołzbłasz, Sylwia, and Andrzej Raczyk. “The Role of the Integrating Factor in the Shaping of Transborder Co-Operation: The Case of Poland”. Quaestiones Geographicae 29, no. 4 (December 20, 2010): 65–73. Accessed July 17, 2024. https://pressto.amu.edu.pl/index.php/qg/article/view/v10117-010-0032-3.