- Author: Andreas Michalopoulos
- Language: English
- Year: 2001
- Author: Steven Muhlberger
- Language: English
- Year: 1990
- Author: Damien P. Nelis
- Language: English
- Year: 2002
- Author: Michael von Albrecht Various Editors Neil Adkin
- Language: English
- Year: 1989
- Author: Robert Maltby
- Language: English
- Year: 1991