Hall, D.T.; Feldman, P.D. et al. (1998). «The Far-Ultraviolet Oxygen Airglow of Europa and Ganymede». The Astrophysical Journal499 (1): 475-481. Bibcode:1998ApJ...499..475H. doi:10.1086/305604.
Hall, D.T.; Feldman, P.D. et al. (1998). «The Far-Ultraviolet Oxygen Airglow of Europa and Ganymede». The Astrophysical Journal499 (1): 475-481. Bibcode:1998ApJ...499..475H. doi:10.1086/305604.