Eskridge, Paul B.; Frogel, Jay A.; Pogge, Richard W.; Quillen, Alice C.; Berlind, Andreas A.; Davies, Roger L.; DePoy, D. L.; Gilbert, Karoline M.; Houdashelt, Mark L.; Kuchinski, Leslie E.; Ramirez, Solange V.; Sellgren, K.; Stutz, Amelia; Terndrup, Donald M.; Tiede, Glenn P. (November 2002). "Near-Infrared and Optical Morphology of Spiral Galaxies". The Astrophysical Journal Supplement Series. 143 (1): 73–111. arXiv:astro-ph/0206320. Bibcode:2002ApJS..143...73E. doi:10.1086/342340.
Martínez-García, Eric E.; González-Lópezlira, Rosa A.; Bruzual-A, Gustavo (20 March 2009). "Spiral Density Wave Triggering of Star Formation in Sa and Sab Galaxies". The Astrophysical Journal. 694 (1): 512–545. arXiv:0812.3647. Bibcode:2009ApJ...694..512M. doi:10.1088/0004-637X/694/1/512.
Eskridge, Paul B.; Frogel, Jay A.; Pogge, Richard W.; Quillen, Alice C.; Berlind, Andreas A.; Davies, Roger L.; DePoy, D. L.; Gilbert, Karoline M.; Houdashelt, Mark L.; Kuchinski, Leslie E.; Ramirez, Solange V.; Sellgren, K.; Stutz, Amelia; Terndrup, Donald M.; Tiede, Glenn P. (November 2002). "Near-Infrared and Optical Morphology of Spiral Galaxies". The Astrophysical Journal Supplement Series. 143 (1): 73–111. arXiv:astro-ph/0206320. Bibcode:2002ApJS..143...73E. doi:10.1086/342340.
Martínez-García, Eric E.; González-Lópezlira, Rosa A.; Bruzual-A, Gustavo (20 March 2009). "Spiral Density Wave Triggering of Star Formation in Sa and Sab Galaxies". The Astrophysical Journal. 694 (1): 512–545. arXiv:0812.3647. Bibcode:2009ApJ...694..512M. doi:10.1088/0004-637X/694/1/512.
Eskridge, Paul B.; Frogel, Jay A.; Pogge, Richard W.; Quillen, Alice C.; Berlind, Andreas A.; Davies, Roger L.; DePoy, D. L.; Gilbert, Karoline M.; Houdashelt, Mark L.; Kuchinski, Leslie E.; Ramirez, Solange V.; Sellgren, K.; Stutz, Amelia; Terndrup, Donald M.; Tiede, Glenn P. (November 2002). "Near-Infrared and Optical Morphology of Spiral Galaxies". The Astrophysical Journal Supplement Series. 143 (1): 73–111. arXiv:astro-ph/0206320. Bibcode:2002ApJS..143...73E. doi:10.1086/342340.
Martínez-García, Eric E.; González-Lópezlira, Rosa A.; Bruzual-A, Gustavo (20 March 2009). "Spiral Density Wave Triggering of Star Formation in Sa and Sab Galaxies". The Astrophysical Journal. 694 (1): 512–545. arXiv:0812.3647. Bibcode:2009ApJ...694..512M. doi:10.1088/0004-637X/694/1/512.