1
Published 1996
National Academy Press

2
by Ückert, Sandra
Published 2020
Nomos Verlagsgesellschaft mbH & Co. KG

3
by Pollard, Christina
Published 2019
MDPI - Multidisciplinary Digital Publishing Institute

4
by Matiaske, Wenzel
Published 2017
Nomos Verlagsgesellschaft mbH & Co. KG

5
by Altmeppen, Klaus-Dieter
Published 2017
Nomos Verlagsgesellschaft mbH & Co. KG