About the Authors
- Katerina Douka
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* E-mail: katerina.douka@rlaha.ox.ac.uk
Affiliation Oxford Radiocarbon Accelerator Unit, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford, United Kingdom
- Christopher A. Bergman
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Affiliation URS Corporation, Cincinnati, Ohio, United States of America
- Robert E. M. Hedges
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Affiliation Oxford Radiocarbon Accelerator Unit, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford, United Kingdom
- Frank P. Wesselingh
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Affiliation Naturalis Biodiversity Center, Leiden, The Netherlands
- Thomas F. G. Higham
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Affiliation Oxford Radiocarbon Accelerator Unit, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford, United Kingdom
Competing Interests
Dr. Christopher Bergman works as a consultant for a private corporation, URS. All of his research for this article was conducted between 1976 and 1985, while a student at the American University of Beirut and the University of London. All work on this article was conducted entirely outside of his activities at URS. Dr. Bergman is not aware of any conflicts or competing interests related to his involvement in this article. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.
Author Contributions
Conceived and designed the experiments: KD REMH TFGH. Performed the experiments: KD. Analyzed the data: KD CAB TFGH . Contributed reagents/materials/analysis tools: FPW. Wrote the paper: KD CAB TFGH.