Kućmierz, Paweł Kućmierz, Łukasz Mazurkiewicz, and Adam Walanus. “Selected Economic Factors Impacting Tourist Travel in Poland Between 2000 and 2012 and a Forecast for 2013–2017”. Geotourism/Geoturystyka, no. 36 (June 1, 2014): 25. Accessed May 1, 2024. https://journals.agh.edu.pl/geotour/article/view/1300.