- Author: Hopf Rainer, Kloas Jutta, Rieke Heilwig, Schmied Martin, Wittke Franz, Lindner Klaus, Merten Dieter
- Language: German
- Year: 1998
- Author: Hopf Rainer, Kuhfeld Hartmut, Link Heike, Weiß Jörg-Peter, Wessels Hans
- Language: German
- Year: 1997
- Author: Bethkenhagen Jochen, Hopf Rainer, Melzer Manfred, Schwartau Cord, Cornelsen Doris
- Language: German
- Year: 1988