Živanović, Branka D.
Ullrich, Kristian K.
Steffens, Bianka
Spasić, Sladjana Z.
Galland, Paul
Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (GA 173/13-1)
DLR/BMWi (50WB1325)
Serbian Ministry of Education and Science (173040)
Article History
Received: 18 September 2017
Accepted: 26 February 2018
First Online: 9 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.