Webster, J.D., Mandeville, C.W., Goldoff, Beth, Coombs, M.L., and Tappen, Christine, 2010, Augustine Volcano; the influence of volatile components in magmas erupted A.D. 2006 to 2,100 years before present, chapter 16 of Power, J.A., Coombs, M.L., and Freymueller, J.T., eds., The 2006 eruption of Augustine Volcano, Alaska: U.S. Geological Survey Professional Paper 1769, p. 383-423 [http://pubs.usgs.gov/pp/1769/chapters/p1769_chapter16.pdf].
chapter PDF on USGS website