Kagel, Heike http://orcid.org/0000-0003-3407-9821
Bier, Frank F.
Frohme, Marcus
Glökler, Jörn F. http://orcid.org/0000-0002-1311-4168
Funding for this research was provided by:
Europäischer Fonds für regionale Entwicklung (EFRE) Investitionsbank des Landes Brandenburg
Article History
Received: 19 June 2019
Accepted: 20 September 2019
First Online: 7 October 2019
Competing Interests
: The authors declare no competing interests.