Science & Technology: The Cosmic Timebomb ; the Asteroid That Wiped out the Dinosaurs Was Thrown to Earth in a Moment of `Planetary Madness'. and Scientists Can Now Predict When the Heavens Will Go Haywire Again, Says Marcus Chown Chown, Marcus.
The Independent (London, England), March 31, 2004
Crater Yields Clues on Extinctions Did a Collision 65 Million Years Ago Help Do in the Dinosaurs? Robert C. Cowen, writer of The Christian Science Monitor.
The Christian Science Monitor, January 13, 1993