Last seen in:
- New York Times - Oct 13 2003
- New York Times - Jun 15 2003
- The Times - Concise - Sunday Times Concise 753 - August 18, 2002
- Wall Street Journal - Mar 8 2002 - WSJ March 08, 2002 - An Average Puzzle
- New York Times - Jul 8 2001
- New York Times - Apr 5 1998
- New York Times - Sep 12 1997
- New York Times - Mar 26 1997