1
by Poggensee, Kay
Published 2015
Springer Fachmedien Wiesbaden

2
by Poggensee, Kay
Published 2016
Springer Fachmedien Wiesbaden

3
by Poggensee, Kay
Published 2011
Gabler Verlag

4
by Poggensee, Kay
Published 2008
Gabler