Rathbun, J. A.; Spencer, J.R.; Tamppari, L.K.; Martin, T.Z.; Barnard, L.; Travis, L.D. (2004). "Mapping of Io's thermal radiation by the Galileo photopolarimeter-radiometer (PPR) instrument". Icarus169 (1): 127–139. doi:10.1016/j.icarus.2003.12.021. Bibcode: 2004Icar..169..127R.
Lopes, R. M. C.; et al. (2004). "Lava lakes on Io: Observations of Io’s volcanic activity from Galileo NIMS during the 2001 fly-bys". Icarus169 (1): 140–174. doi:10.1016/j.icarus.2003.11.013. Bibcode: 2004Icar..169..140L.
Rathbun, J. A.; Spencer, J.R.; Tamppari, L.K.; Martin, T.Z.; Barnard, L.; Travis, L.D. (2004). "Mapping of Io's thermal radiation by the Galileo photopolarimeter-radiometer (PPR) instrument". Icarus169 (1): 127–139. doi:10.1016/j.icarus.2003.12.021. Bibcode: 2004Icar..169..127R.
Lopes, R. M. C.; et al. (2004). "Lava lakes on Io: Observations of Io’s volcanic activity from Galileo NIMS during the 2001 fly-bys". Icarus169 (1): 140–174. doi:10.1016/j.icarus.2003.11.013. Bibcode: 2004Icar..169..140L.