1
by Grunwald, Klaus
Published 2018
Nomos Verlagsgesellschaft mbH & Co. KG

3
by Friedl, Gunther, Kühling, Jürgen
Published 2016
Nomos Verlagsgesellschaft mbH & Co. KG

5
by Becker, Manfred
Published 2019
Rainer Hampp Verlag

6
by Kakuk, Christian
Published 2019
Nomos Verlagsgesellschaft mbH & Co. KG