Zwoliński, Z., Hildebrandt-Radke, I., Mazurek, M., & Makohonienko, M. (2017). Existing and Proposed Urban Geosites Values Resulting from Geodiversity of Poznań City. Quaestiones Geographicae, 36(3), 125–149. https://doi.org/10.1515/quageo-2017-0031