"Characteristics of Terrestrial Planets" by John Chambers, from "The Great Planet Debate: Science as Process", August 14–16, 2008, The Johns Hopkins University Applied Physics Laboratory
Kossiakoff Center, Laurel, MD. http://gpd.jhuapl.edu/abstracts/abstractFiles/chambers_abstract.pdf보관됨 2011-08-17 - 웨이백 머신
"Characteristics of Terrestrial Planets" by John Chambers, from "The Great Planet Debate: Science as Process", August 14–16, 2008, The Johns Hopkins University Applied Physics Laboratory
Kossiakoff Center, Laurel, MD. http://gpd.jhuapl.edu/abstracts/abstractFiles/chambers_abstract.pdf보관됨 2011-08-17 - 웨이백 머신