Kindler, Oliver
Pulkkinen, Otto
Cherstvy, Andrey G.
Metzler, Ralf http://orcid.org/0000-0002-6013-7020
Funding for this research was provided by:
Fundacja na rzecz Nauki Polskiej (Humboldt Polish Honorary Research Fellowship)
Deutsche Forschungsgemeinschaft (ME 1535/7-1)
Article History
Received: 28 January 2019
Accepted: 7 August 2019
First Online: 19 August 2019
Competing Interests
: The authors declare no competing interests.