Does Europa have a subsurface ocean? Evaluation of the geological evidenceR. T. Pappalardo, K. K. Williams, T. Denk et al.|Journal of Geophysical Research Atmospheres|1999Cited by 441
Galileo at Io: Results from High-Resolution ImagingA. S. McEwen, D. A. Williams, M. J. S. Belton et al.|Science|2000Cited by 132
Terrain Variation on Europa: Overview of Galileo Orbit E17 Imaging ResultsD. A. Williams, Galileo Imaging Team, J. E. Klemaszewski et al.|Lunar and Planetary Science Conference|1999Cited by 3