D.  Colombaroli and Gavin, D. G., ?Highly episodic fire and erosion regime over the past 2,000 y in the Siskiyou Mountains, Oregon RID A-2851-2009 RID C-9214-2009?, Proceedings of the National Academy of Sciences of the United States of America, vol. 107, no. 44, pp. 18909-18914, 2010.