- Author: Scientific American
- Language: English
- Year: 2006
- 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
- 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: 2000
- Author: Scientific American
- Language: English
- Year: 2004