1. Enviromental Geology, Natural Resources Management Department New Mexico Highlands University Las Vegas NM USA
2. Institute of Rock Structure and Mechanics Academy of Sciences of the Czech Republic Praha Czech Republic
3. Faculty of Science, Institute of Hydrogeology, Engineering Geology and Applied Geophysics Charles University in Prague Praha Czech Republic
4. Czech Geological Survey Praha Czech Republic
5. New Mexico Bureau of Geology and Mineral Resources New Mexico Institute of Mining and Technology Socorro NM USA
6. Laboratoire Magmas et Volcans Universite Blaise Pascal Clermont‐Ferrand France