- Author: Professor Dr. Josef Honerkamp Professor Dr. Hartmann Römer (auth.)
- Language: German
- Year: 1986
- Author: Professor Dr. Josef Honerkamp Professor Dr. Hartmann Römer (auth.)
- Language: German
- Year: 1989
- Author: Professor Dr. Josef Honerkamp Professor Dr. Hartmann Römer (auth.)
- Language: German
- Year: 1993
- Author: Josef Honerkamp Hartmann Römer (auth.)
- Language: German
- Year: 2012
- Author: Professor Dr. Josef Honerkamp Professor Dr. Hartmann Römer (auth.)
- Language: English
- Year: 1993
- Author: Josef Honerkamp Hartmann Römer
- Language: German
- Year: 1993
- Author: Hartmann Römer
- Language: English
- Year: 2005
- Author: Hartmann Römer
- Language: English
- Year: 2005
- Author: Hartmann Römer
- Language: English
- Year: 2005