- Author: Jiri Matousek Jaroslav Nesetril
- Language: Czech
- Year: 2002
- Author: Jiri Matousek Jaroslav Nesetril
- Language: English
- Year: 1998
- Author: Jiri Matousek Jaroslav Nesetril
- Language: English
- Year: 2008
- Author: Jiri Matousek Jaroslav Nesetril
- Language: English
- Year: 1998