1. Chair of Soil Mechanics Foundation Engineering and Environmental Geotechnics Ruhr Universität Bochum Germany/Chair of Geotechnics Bauhaus Universität Weimar Weimar Germany
2. Institute of Geotechnics Technische Universität Darmstadt Germany/Chair of Soil Mechanics Foundation Engineering and Environmental Geotechnics Ruhr‐Universität Bochum Bochum Germany
3. Chair of Soil Mechanics Foundation Engineering and Environmental Geotechnics Ruhr‐Universität Bochum Bochum Germany