Koszel, Maciej, and Piotr Bartkowiak. “The Taxonomic Measure of Sustainable Development of Metropolitan Areas in Poland”. Krakow Review of Economics and Management/Zeszyty Naukowe Uniwersytetu Ekonomicznego w Krakowie, no. 3(975) (September 25, 2018): 83–100. Accessed September 20, 2024. https://psychologia-ekonomiczna.uek.krakow.pl/index.php/krem/article/view/1429.