1
by Zweifel, Peter, Eisen, Roland
Published 2012
Springer Berlin Heidelberg

2
by Zweifel, Peter, Eisen, Roland
Published 2000
Springer Berlin Heidelberg

3

4
by Busshart, Martin, Maneth, Matthias F.F., Eisen, Roland
Published 1998
Gabler Verlag

5
Published 1996
Springer US
Other Authors: '; ...Eisen, Roland...

6
Published 1999
VS Verlag für Sozialwissenschaften
Other Authors: '; ...Eisen, Roland...