“The Conditions of the Socio-Economic Development of the Main Regions in Poland. Comparative Analysis” (2018) Research Bulletins of the Faculty of Economic Sciences, 1(22), pp. 259–286. Available at: https://ezeszyty.wne.tu.koszalin.pl/index.php/zeszyty/article/view/110 (Accessed: 19 July 2025).