Sigurdsson, H; S. Kelley; R.M. Leckie; S. Carey; T. Bralower; J. King (2000). "Chapter 20: History of circum-Caribbean explosive volcanism: 40Ar/39Ar dating of tephra layers". In Leckie, R.M.; Sigurdsson, H.; Acton, G.D.; Draper, G. (eds.). Sci. Results. Proc. ODP. Vol. 165. College Station, Texas: Ocean Drilling Program. doi:10.2973/odp.proc.sr.165.2000. ISSN1096-7451.
"Latest news". RRS James Cook Voyage 44. Retrieved January 14, 2012.
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Sigurdsson, H; S. Kelley; R.M. Leckie; S. Carey; T. Bralower; J. King (2000). "Chapter 20: History of circum-Caribbean explosive volcanism: 40Ar/39Ar dating of tephra layers". In Leckie, R.M.; Sigurdsson, H.; Acton, G.D.; Draper, G. (eds.). Sci. Results. Proc. ODP. Vol. 165. College Station, Texas: Ocean Drilling Program. doi:10.2973/odp.proc.sr.165.2000. ISSN1096-7451.