- Author: Scientific American
- Language: English
- Year: 1995
- Author: Scientific American
- Language: English
- Year: 1996
- Author: Scientific American
- Language: English
- Year: 1999
- Author: Scientific American
- Language: English
- Year: 2000
- Author: Scientific American
- Language: English
- Year: 2002
- Author: Scientific American
- Language: English
- Year: 2004
- 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