1
by Geiselhart, Helmut
Published 2001
Gabler Verlag

2
by Geiselhart, Helmut
Published 2012
Springer Fachmedien Wiesbaden

3
by Geiselhart, Helmut
Published 2008
Gabler

4
by Geiselhart, Helmut
Published 1997
Gabler Verlag