
- Author: David Cook
- Language: English
- Year: 2010

- Author: Erica Sadun Michael Grothaus Steve Sande
- Language: English
- Year: 2010

- Author: Erica Sadun
- Language: English
- Year: 2007

- Author: Charles A Bell
- Language: English

- Author: Alan Thorn
- Language: English

- Author: Steven Goodwin
- Language: English

- Author: Matthias Paul Scholz
- Language: English
- Year: 2007

- Author: James Floyd Kelly
- Language: English
- Year: 2010

- Author: Alan Thorn
- Language: English
- Year: 2013

- Author: Erica Sadun Michael Grothaus
- Language: English
- Year: 2010