Frings, Michael
Lakes, Tobia
Müller, Daniel
Khan, M. M. H.
Epprecht, Michael
Kipruto, Samuel
Galea, Sandro
Gruebner, Oliver
Funding for this research was provided by:
Humboldt-Universität zu Berlin, Department of Geography
Article History
Received: 10 January 2018
Accepted: 12 June 2018
First Online: 29 June 2018
Competing Interests
: The authors declare no competing interests.