http://orcid.org/0000-0002-9803-1336
About the Authors
- Ulrich J. Frey
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Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Software, Validation, Visualization, Writing – original draft, Writing – review & editing
* E-mail: ulrich.frey@dlr.de
Affiliation German Aerospace Center, Stuttgart, Germany
- Frauke Pirscher
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Roles Conceptualization, Investigation, Writing – review & editing
Affiliation Martin-Luther University Halle-Wittenberg, Halle (Saale), Germany
Competing Interests
The authors have declared that no competing interests exist.