1. Department of Environment and Biodiversity, Salzburg University, Salzburg, Austria
2. Study Center of Natural History-Mineralogy, Universalmuseum Joanneum, Graz, Austria
3. Institute of Physics – CSE / Division of Geochronology and Environmental Isotopes, Gliwice, Poland
4. OMV Petrom, Bucharest, Romania
5. Faculty of Geology and Geophysics, University of Bucharest, Bucharest, Romania
6. Societatea Națională de Speologie, Cluj-Napoca, Romania