1
2
3
4
5
Article
6
Book
7
Published: Köln : Bund-Verl, 1984
Book
8
Published: Köln : DuMont, 2009
Book
9
Book
10
Book
11
Published: Leverkusen-Opladen : Budrich, 2009
Book
12
Book
13
Book
14
Book
15
16
17
Published: Berlin, 2011
Book
18
Published: Bundestags TV, 2017
19
20