About the Authors

Paul Vigne

Affiliation IBDC, CNRS UMR 6543, Université de Nice Sophia Antipolis, Nice, France

Michel Tauc

Affiliation TIANP, CNRS FRE 3093, Université de Nice Sophia Antipolis, Nice, France

Christian Frelin

cfrelin@unice.fr

Affiliation IBDC, CNRS UMR 6543, Université de Nice Sophia Antipolis, Nice, France

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PV MT CF. Performed the experiments: PV MT CF. Analyzed the data: PV MT CF. Contributed reagents/materials/analysis tools: PV MT. Wrote the paper: CF.