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Physical Sciences - Geology - Social Sciences - Anthropology:
Todd A. Surovell,
Vance T. Holliday,
Joseph A. M. Gingerich,
Caroline Ketron,
C. Vance Haynes, Jr,
Ilene Hilman,
Daniel P. Wagner,
Eileen Johnson,
and Philippe Claeys
An independent evaluation of the Younger Dryas extraterrestrial impact hypothesi...PNAS 2009106:18155-18158; published online before print October 12, 2009,doi:10.1073/pnas.0907857106
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