http://orcid.org/0000-0003-1791-3175
About the Authors
- Karl-Göran Sjögren
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* E-mail: karl-goran.sjogren@archaeology.gu.se
Affiliation Department of Historical Studies, Göteborg University, Göteborg, Sweden
- T. Douglas Price
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Affiliation Laboratory for Archaeological Chemistry, University of Wisconsin-Madison, Madison, United States of America
- Kristian Kristiansen
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Affiliation Department of Historical Studies, Göteborg University, Göteborg, Sweden
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Analyzed the data: KGS TDP. Wrote the paper: KGS TDP KK.