- Author: Block Berthold
- Language: German
- Year: 2006
- Author: Block Berthold
- Language: German
- Year: 2006
- Author: Block Berthold
- Language: German
- Year: 2006
- Author: Lippek V., Müller B., Block Berthold
- Language: German
- Year: 2009
- Author: Block Berthold
- Language: English, German
- Year: 2004
- Author: Block Berthold
- Language: German
- Year: 2006