About the Authors
- João Zilhão
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* E-mail: Joao.Zilhao@bristol.ac.uk
Affiliation Department of Archaeology and Anthropology, University of Bristol, Bristol, United Kingdom
- Simon J. M. Davis
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Affiliation Instituto de Gestão do Património Arquitectónico e Arqueológico, Lisbon, Portugal
- Cidália Duarte
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Affiliation Instituto de Gestão do Património Arquitectónico e Arqueológico, Lisbon, Portugal
- António M. M. Soares
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Affiliation Instituto Tecnológico e Nuclear, Lisbon, Portugal
- Peter Steier
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Affiliation VERA Laboratory, Faculty of Physics, University of Vienna, Vienna, Austria
- Eva Wild
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Affiliation VERA Laboratory, Faculty of Physics, University of Vienna, Vienna, Austria
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: JZ. Performed the experiments: AMMS PS EMW. Analyzed the data: JZ SD CD AMMS PS EMW. Wrote the paper: JZ SD CD AMMS PS EMW.