Lopes, R. M. C.; et al. (2001). "Io in the near infrared: Near-Infrared Mapping Spectrometer (NIMS) results from the Galileo flybys in 1999 and 2000". J. Geophys. Res. 106 (E12): 33053–33078. Bibcode:2001JGR...10633053L. doi:10.1029/2000JE001463.
Lopes, R. M. C.; et al. (2001). "Io in the near infrared: Near-Infrared Mapping Spectrometer (NIMS) results from the Galileo flybys in 1999 and 2000". J. Geophys. Res. 106 (E12): 33053–33078. Bibcode:2001JGR...10633053L. doi:10.1029/2000JE001463.