1. Institute of Geography, Faculty of Science Pavol Jozef Šafárik University in Košice Košice Slovak Republic
2. DPP Žilina Ltd. Žilina Slovak Republic
3. Department of Geology and Paleontology Comenius University in Bratislava, Faculty of Natural Sciences Bratislava Slovak Republic
4. State Nature Conservancy of the Slovak Republic Slovak Caves Administration Liptovský Mikuláš Slovak Republic
5. Department of Geography, Pedagogical Faculty Catholic University in Ružomberok Ružomberok Slovak Republic
6. Polish Geological Institute – National Research Institute Warszawa Poland
7. Division of Geology, Earth Science Institute Slovak Academy of Sciences Banská Bystrica Slovak Republic