1. Cornell Tree Ring Laboratory, Department of Classics, B-48 Goldwin Smith Hall, Cornell University, Ithaca, NY 14853, USA.
2. Department of Anthropology, University of Georgia, 250A Baldwin Hall, Jackson Street, Athens, GA 30602-1619, USA.
3. Centre for Isotope Research, Faculty of Science and Engineering, University of Groningen, Nijenborgh 6, NL-9747 AG Groningen, Netherlands.
4. Center for Applied Isotope Studies, University of Georgia, 120 Riverbend Rd, Athens, GA 30602-4702, USA.
5. Radiocarbon Dating Laboratory, University of Waikato, Hamilton 3240, New Zealand.
6. Research Laboratory for Archaeology and the History of Art, School of Archaeology, Oxford University, 1 South Parks Road, Oxford OX1 3TG, UK.
7. Department of Anthropology, 261 McGraw Hall, Cornell University, Ithaca, NY 14853-4601, USA.
8. University of Vienna, VERA Laboratory, Faculty of Physics, Isotope Research and Nuclear Physics, Währinger Straße 17, A-1090 Vienna, Austria.