- Author: Scientific American
- Language: English
- Year: 1994
- Author: Scientific American
- Language: English
- Year: 1995
- Author: Scientific American
- Language: English
- Year: 2001
- Author: Scientific American
- Language: English
- Year: 2004
- Author: Scientific American
- Language: English
- Year: 2006
- Author: Scientific American
- Language: English
- Year: 2005
- Author: Scientific American
- Language: English
- Year: 1995
- Author: Scientific American
- Language: English
- Year: 1996
- Author: Scientific American
- Language: English
- Year: 1997
- Author: Scientific American
- Language: English
- Year: 1993