1. Institute of Geography Heidelberg University Heidelberg Germany
2. UDATA GmbH Neustadt an der Weinstraße Germany
3. Institute of Earth and Environmental Sciences University of Freiburg Freiburg Germany
4. Institute of Geography University of Cologne Cologne Germany
5. ArchaeoGeophysics, Institute of Archaeology University of Cologne Cologne Germany
6. Department of Geophysics Zentralanstalt für Meteorologie und Geodynamik (ZAMG) Vienna Austria