Kućmierz, Paweł Kućmierz, Łukasz Mazurkiewicz, and Adam Walanus. 2014. “Selected Economic Factors Impacting Tourist Travel in Poland Between 2000 and 2012 and a Forecast for 2013–2017”. Geotourism/Geoturystyka, no. 36 (June): 25. https://doi.org/10.7494/geotour.2014.36.25.