1
by Nelson, Joanne
Published 2019
MDPI - Multidisciplinary Digital Publishing Institute

2
by Friedrich, Alexander
Published 2018
Nomos Verlagsgesellschaft mbH & Co. KG

3
by Richter, Philipp
Published 2018
Nomos Verlagsgesellschaft mbH & Co. KG

4
by Friedrich, Alexander
Published 2017
Nomos Verlagsgesellschaft mbH & Co. KG