- Author: Graham Curtis, David Cobham
- Language: English
- Year: 2005
- Author: Graham Curtis, David Cobham
- Language: English
- Year: 2005
- Author: David Cobham
- Language: English
- Year: 2002
- Author: David Cobham
- Language: English
- Year: 2007
- Author: David Cobham Øyvind Eitrheim Stefan Gerlach Jan F. Qvigstad
- Language: English
- Year: 2010