Różycka, M. and Migoń, P. (2017) “Visitors’ background as a factor in geosite evaluation. The case of Cenozoic volcanic sites in the Pogórze Kaczawskie region, SW Poland”, Geotourism/Geoturystyka, (38-39), p. 3. doi: 10.7494/geotour.2014.38-39.3.