DeShon, H.R., Thurber, C.H., and Power, J.A., 2010, Earthquake waveform similarity and evolution at Augustine Volcano from 1993 to 2006, chapter 5 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. 103-118 [http://pubs.usgs.gov/pp/1769/chapters/p1769_chapter05.pdf].
chapter PDF on USGS website