Tičar, J., Komac, B., Zorn, M., Ferk, M., Hrvatin, M., & Ciglič, R. (2017). From Urban Geodiversity to Geoheritage: The Case of Ljubljana (Slovenia). Quaestiones Geographicae, 36(3), 37–50. https://doi.org/10.1515/quageo-2017-0023