- Author: Aleksei Suetin
- Language: German
- Year: 1997
- Author: Valeri Bronznik
- Language: German
- Year: 2004
- Author: Valeri Bronznik
- Language: German
- Year: 2004
- Author: Harald Kellhack Rainer Schlenker
- Language: German
- Year: 1995
- Author: Valery Bronznik
- Language: English
- Year: 2005
- Author: Harald Kellhack Rainer Schlenker
- Language: German
- Year: 1995