Xu G., Frey F.A., Clague D.A., Weis D., Beeson M.H. East Molokai and other Kea Trend Volcanoes: Magmatic Processes and Sources as they Migrate Away from the Hawaiian Hotspot. Geochem. Geophys. Geosyst., 6, Q05008, doi:10.1029/2004GC000830, 2005.
Xu G., Frey F.A., Clague D.A., Weis D., Beeson M.H. East Molokai and other Kea Trend Volcanoes: Magmatic Processes and Sources as they Migrate Away from the Hawaiian Hotspot. Geochem. Geophys. Geosyst., 6, Q05008, doi:10.1029/2004GC000830, 2005.