Lisa Kewley; Michael Dopita; C. A. Heisler; S. Lumsden (ianuarie 2001). „Optical Classification of Southern Warm Infrared Galaxies”. The Astrophysical Journal Supplement Series (în engleză). 132 (1): 37–71. Bibcode:2001ApJS..132...37K. doi:10.1086/318944. WikidataQ60504371.
Lisa Kewley; Michael Dopita; C. A. Heisler; S. Lumsden (ianuarie 2001). „Optical Classification of Southern Warm Infrared Galaxies”. The Astrophysical Journal Supplement Series (în engleză). 132 (1): 37–71. Bibcode:2001ApJS..132...37K. doi:10.1086/318944. WikidataQ60504371.
Lisa Kewley; Michael Dopita; C. A. Heisler; S. Lumsden (ianuarie 2001). „Optical Classification of Southern Warm Infrared Galaxies”. The Astrophysical Journal Supplement Series (în engleză). 132 (1): 37–71. Bibcode:2001ApJS..132...37K. doi:10.1086/318944. WikidataQ60504371.