- Author: Gerhard von Scharnhorst, Michael Sikora Michael Sikora
- Language: German
- Year: 2015
- Author: Michael Sikora
- Language: German
- Year: 2009
- Author: Johannes Klinisch, Michael Sikora
- Language: German
- Year: 2005
- Author: Gerhard von Scharnhorst, Michael Sikora
- Language: German
- Year: 2014
- Author: Michael Sikora
- Language: English
- Year: 2003
- Author: Michael Sikora
- Language: English
- Year: 2003
- Author: Michael Sikora
- Language: English
- Year: 2008