- Author: Peter Suber
- Language: English
- Year: 1990
- Author: Kimberly A. Mccabe Gregory M. Martin
- Language: English
- Year: 2004
- Author: Bernard A. Cook
- Language: English
- Year: 2004
- Author: Wolf Bloemers
- Language: English
- Year: 2003
- Author: Julia L. Ortiz-Griffin William D.Griffin
- Language: English
- Year: 2003
- Author: Douglas L. Donkel
- Language: English
- Year: 1993
- Author: Alemayehu Biru Worku
- Language: English
- Year: 1997
- Author: Wolfgang Balzer Chris M. Dawe
- Language: English
- Year: 1997
- Author: James Kaye Bo Strath
- Language: English
- Year: 2000
