1. Institute of Geosciences, Dept. of Geophysics; Christian-Albrechts-University of Kiel; Otto-Hahn-Platz 1 24118 Kiel Germany
2. Baylor Interdisciplinary Core; Baylor University; Morrison Hall 101 Waco Texas 76798-7350 USA
3. Centre for Baltic and Scandinavian Archaeology (ZBSA); Schloss Gottorf 24837 Schleswig Germany
4. Cotsen Institute of Archaeology and Scandinavian Section; University of California; Los Angeles, 212 Royce Hall Los Angeles CA 90095-1539 USA
5. Department of History and Viking Studies Program; Háskóli Íslands (University of Iceland); POB 907, 121 Reykjavik Iceland