Original: Martinez, C; Ormrod, G; and Finn, H.; Cassini Discovers Ring and One, Possibly Two, Objects at Saturn JPL news release (September 9, 2004) Eccentricity Based on above semimajor axis range, and Spitale et al.
Simplified: Martinez, C; Ormrod, G; and Finn, H.; Cassini Discovers Ring and One, Possibly Two, Objects at Saturn JPL news release (September 9 2004) Eccentricity Based on above semimajor axis range, and Spitale et al.