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Investigation.) (2009 ed.). SantaBarbara, CA: Praeger/ABC-CLIO. pp. 17–40. Ring, Kenneth. Heading toward Omega. In search of the Meaning of Near-Death Experience
978-0-8165-1525-7. Blue, Jennifer (8 December 2004). "Nomenclature Ring and Ring Gap Nomenclature". Gazetteer of Planetary Nomenclature. USGS Wilford
R. (1999-04-01). "Keck Infrared Observations of Jupiter's Ring System near Earth's 1997 Ring Plane Crossing". Icarus (英文). 138 (2). Bibcode:1999Icar..138
ISBN 978-0-19-152588-9. 原先內容歸檔喺15 February 2022. 喺15 February 2022搵到. Johnson 2013, p. 78. Ring, Trudy; Watson, Noelle; Schellinger, Paul (2013). Northern Europe: International