Kontak, Max http://orcid.org/0000-0003-3738-7483
Michel, Volker http://orcid.org/0000-0002-2551-0491
Funding for this research was provided by:
School of Science and Technology, University of Siegen
Article History
Received: 6 April 2018
Accepted: 25 August 2018
First Online: 10 September 2018