Zdon-Korzeniowska, Małgorzata, and Tomasz Rachwał. “Tourism in Conditions of Global Economic Crisis”. Studies of the Industrial Geography Commission of the Polish Geographical Society 18 (January 1, 2011): 116–128. Accessed May 7, 2024. https://prace-kgp.uken.krakow.pl/article/view/94.