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- Language: German
- Year: 2000
- Author: P.G. Allhoff J. Leidel H.-P. Voigt J. Engelbrecht
- Language: German
- Year: 2001
- Author: P.G. Allhoff J. Leidel G. Ollenschläger H.-P. Voigt
- Language: German
- Year: 1999
- Author: P.G. Allhoff J. Leidel H.-P. Voigt
- Language: German
- Year: 2000
- Author: P.G. Allhoff J. Leidel H.-P. Voigt G. Ollenschläger
- Language: German
- Year: 1996
- Author: Jörgen Schmidt-Voigt
- Language: German
- Year: 1984
- Author: P.G. Allhoff J. Leidel H.-P. Voigt J. Engelbrecht
- Language: German
- Year: 2002
- Author: Siegfried Borelli
- Language: German
- Year: 1988
- Author: Charles V. Pollack Jr.
- Language: English
- Year: 2019