Seidelmann, P. K.; Harrington, R. S.; Pascu, D.; Baum, W. A.; Currie, D. G.; Westphal, J. A.; Danielson, G. E. (1981). “Saturn satellite observations and orbits from the 1980 ring plane crossing”. Icarus47 (2): 282. Bibcode: 1981Icar...47..282S. doi:10.1016/0019-1035(81)90172-X.
Seidelmann, P. K.; Harrington, R. S.; Pascu, D.; Baum, W. A.; Currie, D. G.; Westphal, J. A.; Danielson, G. E. (1981). “Saturn satellite observations and orbits from the 1980 ring plane crossing”. Icarus47 (2): 282. Bibcode: 1981Icar...47..282S. doi:10.1016/0019-1035(81)90172-X.