3
4
5
6
Published 2003
Book
7
9
by Schaef, Anne Wilson
Published 1993
Book
10
by Voigtel, Roland
Published 2015
Book
11
Published in Jahrbuch Sucht ... (1993)
Serial Volume
12
13
14
by Lamfried, Doris
Published 2009
Book
17
18
19
20