- Author: Pritchett William Kendrick
- Language: English
- Year: 1994
- Author: De Neeve P. W.
- Language: English
- Year: 1984
- Author: Pieter Willem De Neeve
- Language: English
- Year: 1984
- Author: Lukas de Blois
- Language: English
- Year: 1987
- Author: Peachin Michael
- Language: English
- Year: 1990
- Author: B. Baldwin
- Language: English
- Year: 1985