Adamenko, O. M., O. R. Stelmakh, D. O. Zorin, and K. O. Radlovska. “Idea of the Ecological and Geological Tourist Centre in Starunia (Fore-Carpathian Region, Ukraine)”. Geotourism/Geoturystyka, no. 18, p. 21, doi:10.7494/geotour.2009.18.21.