- Author: Harald Ibach Hans Lüth (auth.)
- Language: German
- Year: 2009
- Author: Harald Ibach Hans Lüth (auth.)
- Language: German
- Year: 1990
- Author: Harald Ibach Hans Lüth (auth.)
- Language: German
- Year: 2009
- Author: Harald Ibach Hans Lüth (auth.)
- Language: English
- Year: 2009
- Author: Harald Ibach Hans Lüth (auth.)
- Language: German
- Year: 2009
- Author: Harald Ibach Hans Lüth (auth.)
- Language: English
- Year: 2009