Skrutskie, M. F.; Cutri, R. M.; Stiening, R.; Weinberg, M. D.; Schneider, S.; Carpenter, J. M.; Beichman, C.; Capps, R.; et al. (2006). ”The Two Micron All Sky Survey (2MASS)”. The Astronomical Journal 131 (2): sid. 1163–1183. doi:10.1086/498708. Bibcode: 2006AJ....131.1163S.
García-Lorenzo, B.; Márquez, I.; Barrera-Ballesteros, J. K.; Masegosa, J.; Husemann, B.; Falcón-Barroso, J.; Lyubenova, M.; Sánchez, S. F.; et al. (January 2015). ”Ionized gas kinematics of galaxies in the CALIFA survey. I. Velocity fields, kinematic parameters of the dominant component, and presence of kinematically distinct gaseous systems”. Astronomy & Astrophysics 573: sid. 43. doi:10.1051/0004-6361/201423485. A59. Bibcode: 2015A&A...573A..59G.
Larson, K. L.; Díaz-Santos, T.; Armus, L.; Privon, G. C.; Linden, S. T.; Evans, A. S.; Howell, J.; Charmandaris, V.; et al. (January 2020). ”Star-forming Clumps in Local Luminous Infrared Galaxies”. The Astrophysical Journal 888 (2): sid. 92. doi:10.3847/1538-4357/ab5dc3. 92. Bibcode: 2020ApJ...888...92L.
Sandage, Allan (April 1959). ”A Supernova in NGC 23”. Publications of the Astronomical Society of the Pacific 71 (419): sid. 162. doi:10.1086/127353. Bibcode: 1959PASP...71..162S.
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Skrutskie, M. F.; Cutri, R. M.; Stiening, R.; Weinberg, M. D.; Schneider, S.; Carpenter, J. M.; Beichman, C.; Capps, R.; et al. (2006). ”The Two Micron All Sky Survey (2MASS)”. The Astronomical Journal 131 (2): sid. 1163–1183. doi:10.1086/498708. Bibcode: 2006AJ....131.1163S.
García-Lorenzo, B.; Márquez, I.; Barrera-Ballesteros, J. K.; Masegosa, J.; Husemann, B.; Falcón-Barroso, J.; Lyubenova, M.; Sánchez, S. F.; et al. (January 2015). ”Ionized gas kinematics of galaxies in the CALIFA survey. I. Velocity fields, kinematic parameters of the dominant component, and presence of kinematically distinct gaseous systems”. Astronomy & Astrophysics 573: sid. 43. doi:10.1051/0004-6361/201423485. A59. Bibcode: 2015A&A...573A..59G.
Larson, K. L.; Díaz-Santos, T.; Armus, L.; Privon, G. C.; Linden, S. T.; Evans, A. S.; Howell, J.; Charmandaris, V.; et al. (January 2020). ”Star-forming Clumps in Local Luminous Infrared Galaxies”. The Astrophysical Journal 888 (2): sid. 92. doi:10.3847/1538-4357/ab5dc3. 92. Bibcode: 2020ApJ...888...92L.
Sandage, Allan (April 1959). ”A Supernova in NGC 23”. Publications of the Astronomical Society of the Pacific 71 (419): sid. 162. doi:10.1086/127353. Bibcode: 1959PASP...71..162S.