1
by Jopeck, Valerie Tate
Published 1999
National Academy Press

2
by Matiaske, Wenzel
Published 2017
Nomos Verlagsgesellschaft mbH & Co. KG

3
by Rittmann, Günter
Published 2014
Nomos Verlagsgesellschaft mbH & Co. KG

4
by Tan, Corinne
Published 2018
UCL Press

5
by Krups, M.
Published 2018
Peter Lang International Academic Publishers

6
by Reimer, Torsten
Published 2019
MDPI - Multidisciplinary Digital Publishing Institute