1. Dust plasmas with a dust size distribution;Aanesen,1990
2. Saturn's E-ring;Baum,1984
3. Burden, R. L., , J. D., Faires, , Numerical Analysis, 4th ed. PWS-Kent, Boston, Mass., 1989,
4. The ethereal rings of Jupiter and Saturn;Burns,1984
5. Atlas of Saturn's rings;Collins,1984