1
2
3
4
5
Published: Regensburg : Pustet, 1991.
Book
6
Published: München u.a. : Piper, 1993.
Book
7
8
Book
9
10
11
12
Published: Frankfurt [u.a.] : Campus-Verl, 1999.
Book
13
14
Book
15
Published: Köln : Bund-Verl, 1984.
Book
16
17
18
19
20