1. Department of Applied and Environmental Geophysics, Faculty of Natural Sciences Comenius University Bratislava Slovak Republic
2. Division of Geophysics Earth Science Institute of the Slovak Academy of Sciences Bratislava Slovak Republic
3. Department of Theoretical Geodesy, Faculty of Civil Engineering Slovak University of Technology Bratislava Slovak Republic
4. Department of Geodynamics Institute of Geophysics Czech Academy of Sciences Prague Czech Republic
5. Department of Mapping and Land Consolidation, Faculty of Civil Engineering Slovak University of Technology Bratislava Slovak Republic
6. Laboratory of Applied Geophysics, School of Geology Aristotle University of Thessaloniki Thessaloniki Greece