| Citation |
French, R.G., P.D. Nicholson, and M.K. Gordon Radial Profiles of Saturn's Rings from the Palomar 200 Inch Telescope Observations of the 1989 Occultation of 28 Sgr, PAL200-SR-CIRC-4-OCC-V1.0, USA_NASA_PDS_EBROCC_0001, NASA Planetary Data System, 2003. |