Helm, Michael
Freyler, Kathrin
Waldvogel, Janice
Gollhofer, Albert
Ritzmann, Ramona
Funding for this research was provided by:
DLR (50WB1715)
Article History
Received: 15 January 2019
Accepted: 8 July 2019
First Online: 31 July 2019
Compliance with ethical standards
:
: The authors have no conflicts of interest related to this study.