- Author: Walter Kaspers Hans-Jürgen Küfner (auth.)
- Language: German
- Year: 1984
- Author: Walter Kaspers
- Language: German
- Year: 1980
- Author: Walter Kaspers Hans-Jürgen Küfner Berthold Heinrich Wolfgang Vogt (auth.)
- Language: German
- Year: 1996
- Author: Walter Kaspers Hans-Jürgen Küfner Berthold Heinrich Wolfgang Vogt (auth.)
- Language: German
- Year: 1994
- Author: Walter Kaspers Hans-Jürgen Küfner (auth.)
- Language: German
- Year: 1977