Kućmierz, P. K., Mazurkiewicz, Łukasz, & Walanus, A. (2014). Selected economic factors impacting tourist travel in Poland between 2000 and 2012 and a forecast for 2013–2017. Geotourism/Geoturystyka, 36, 25. https://doi.org/10.7494/geotour.2014.36.25