1
by Jopeck, Valerie Tate
Published 1999
National Academy Press

2
by Pray, Leslie A.
Published 2015
National Academies Press

3
by Matiaske, Wenzel
Published 2017
Nomos Verlagsgesellschaft mbH & Co. KG

4
by Altmeppen, Klaus-Dieter
Published 2017
Nomos Verlagsgesellschaft mbH & Co. KG