1. Haifa Center for German and European Studies, University of Haifa, Abba Khoushy Ave 199, Haifa 3498838, Israel
2. The Arava Institute for Environmental Studies, Kibbutz Ketura, D.N. Hevel Eilot 8884000, Israel
3. Chemical and Geological Science Department, University of Cagliari, SS 554 Bivio Sestu, 09042 Cagliari, Italy
4. Dead Sea and Arava Science Center, Tamar Regional Council 86910, Israel