Reines, Amy E.; Johnson, Kelsey E.; Goss, W. M. (2008). "Emerging Massive Star Clusters Revealed: High-Resolution Imaging of NGC 4449 from the Radio to the Ultraviolet". Jurnal Astronomi. 135 (6): 2222–2239. arXiv:0804.0005. Bibcode:2008AJ....135.2222R. doi:10.1088/0004-6256/135/6/2222.CS1 maint: multiple names: authors list (link)
Larsen, Søren S.; Brodie, Jean P.; Hunter, Deidre A. (2004). "Dynamical Mass Estimates for Five Young Massive Stellar Clusters". Jurnal Astronomi. 128 (5): 2295–2305. arXiv:astro-ph/0407373. Bibcode:2004AJ....128.2295L. doi:10.1086/424538.CS1 maint: multiple names: authors list (link)
Böker, Torsten; van der Marel, Roeland P.; Mazzuca, Lisa; Rix, Hans-Walter; Rudnick, Gregory; Ho, Luis C.; Shields, Joseph C. (2001). "A Young Stellar Cluster in the Nucleus of NGC 4449". Jurnal Astronomi. 121 (3): 1473–1481. arXiv:astro-ph/0010542. Bibcode:2001AJ....121.1473B. doi:10.1086/319415.CS1 maint: multiple names: authors list (link)
Martínez-Delgado, David; Romanowsky, Aaron J.; Gabany, R. Jay; Annibali, Francesca; Arnold, Jacob A.; Fliri, Jürgen; Zibetti, Stefano; van der Marel, Roeland P.; Rix, Hans-Walter; Chonis, Taylor S.; Carballo-Bello, Julio A.; Aloisi, Alessandra; Macciò, Andrea V.; Gallego-Laborda, J.; Brodie, Jean P.; Merrifield, Michael R. (2012). "Dwarfs Gobbling Dwarfs: A Stellar Tidal Stream around NGC 4449 and Hierarchical Galaxy Formation on Small Scales". Warkah Jurnal Astrofizik. 748 (2). arXiv:1112.2154. Bibcode:2012ApJ...748L..24M. doi:10.1088/2041-8205/748/2/L24.CS1 maint: multiple names: authors list (link)
Annibali, F.; Tosi, M.; Aloisi, A.; van der Marel, R. P.; Martinez-Delgado, D. (2012). "Cluster 77 in NGC 4449: The Nucleus of a Satellite Galaxy Being Transformed into a Globular Cluster?". Warkah Jurnal Astrofizik. 745 (1). arXiv:1111.5861. Bibcode:2012ApJ...745L...1A. doi:10.1088/2041-8205/745/1/L1.CS1 maint: multiple names: authors list (link)
Karachentsev, Igor D.; Karachentseva, Valentina E.; Huchtmeier, Walter K.; Makarov, Dmitry I. (2003). "A Catalog of Neighboring Galaxies". Jurnal Astronomi. 127 (4): 2031–2068. Bibcode:2004AJ....127.2031K. doi:10.1086/382905.CS1 maint: multiple names: authors list (link)
Annibali, F.; Aloisi, A.; Mack, J.; Tosi, M.; van der Marel, R. P.; Angeretti, L.; Leitherer, C.; Sirianni, M. (2008). "Starbursts in the Local Universe: New Hubble Space Telescope Advanced Camera for Surveys Observations of the Irregular Galaxy NGC 4449". Jurnal Astronomi. 135 (5): 1900–1916. Bibcode:2008AJ....135.1900A. doi:10.1088/0004-6256/135/5/1900.CS1 maint: multiple names: authors list (link)
Reines, Amy E.; Johnson, Kelsey E.; Goss, W. M. (2008). "Emerging Massive Star Clusters Revealed: High-Resolution Imaging of NGC 4449 from the Radio to the Ultraviolet". Jurnal Astronomi. 135 (6): 2222–2239. arXiv:0804.0005. Bibcode:2008AJ....135.2222R. doi:10.1088/0004-6256/135/6/2222.CS1 maint: multiple names: authors list (link)
Larsen, Søren S.; Brodie, Jean P.; Hunter, Deidre A. (2004). "Dynamical Mass Estimates for Five Young Massive Stellar Clusters". Jurnal Astronomi. 128 (5): 2295–2305. arXiv:astro-ph/0407373. Bibcode:2004AJ....128.2295L. doi:10.1086/424538.CS1 maint: multiple names: authors list (link)
Böker, Torsten; van der Marel, Roeland P.; Mazzuca, Lisa; Rix, Hans-Walter; Rudnick, Gregory; Ho, Luis C.; Shields, Joseph C. (2001). "A Young Stellar Cluster in the Nucleus of NGC 4449". Jurnal Astronomi. 121 (3): 1473–1481. arXiv:astro-ph/0010542. Bibcode:2001AJ....121.1473B. doi:10.1086/319415.CS1 maint: multiple names: authors list (link)
Martínez-Delgado, David; Romanowsky, Aaron J.; Gabany, R. Jay; Annibali, Francesca; Arnold, Jacob A.; Fliri, Jürgen; Zibetti, Stefano; van der Marel, Roeland P.; Rix, Hans-Walter; Chonis, Taylor S.; Carballo-Bello, Julio A.; Aloisi, Alessandra; Macciò, Andrea V.; Gallego-Laborda, J.; Brodie, Jean P.; Merrifield, Michael R. (2012). "Dwarfs Gobbling Dwarfs: A Stellar Tidal Stream around NGC 4449 and Hierarchical Galaxy Formation on Small Scales". Warkah Jurnal Astrofizik. 748 (2). arXiv:1112.2154. Bibcode:2012ApJ...748L..24M. doi:10.1088/2041-8205/748/2/L24.CS1 maint: multiple names: authors list (link)
Annibali, F.; Tosi, M.; Aloisi, A.; van der Marel, R. P.; Martinez-Delgado, D. (2012). "Cluster 77 in NGC 4449: The Nucleus of a Satellite Galaxy Being Transformed into a Globular Cluster?". Warkah Jurnal Astrofizik. 745 (1). arXiv:1111.5861. Bibcode:2012ApJ...745L...1A. doi:10.1088/2041-8205/745/1/L1.CS1 maint: multiple names: authors list (link)
Karachentsev, Igor D.; Karachentseva, Valentina E.; Huchtmeier, Walter K.; Makarov, Dmitry I. (2003). "A Catalog of Neighboring Galaxies". Jurnal Astronomi. 127 (4): 2031–2068. Bibcode:2004AJ....127.2031K. doi:10.1086/382905.CS1 maint: multiple names: authors list (link)
Annibali, F.; Aloisi, A.; Mack, J.; Tosi, M.; van der Marel, R. P.; Angeretti, L.; Leitherer, C.; Sirianni, M. (2008). "Starbursts in the Local Universe: New Hubble Space Telescope Advanced Camera for Surveys Observations of the Irregular Galaxy NGC 4449". Jurnal Astronomi. 135 (5): 1900–1916. Bibcode:2008AJ....135.1900A. doi:10.1088/0004-6256/135/5/1900.CS1 maint: multiple names: authors list (link)
Reines, Amy E.; Johnson, Kelsey E.; Goss, W. M. (2008). "Emerging Massive Star Clusters Revealed: High-Resolution Imaging of NGC 4449 from the Radio to the Ultraviolet". Jurnal Astronomi. 135 (6): 2222–2239. arXiv:0804.0005. Bibcode:2008AJ....135.2222R. doi:10.1088/0004-6256/135/6/2222.CS1 maint: multiple names: authors list (link)
Larsen, Søren S.; Brodie, Jean P.; Hunter, Deidre A. (2004). "Dynamical Mass Estimates for Five Young Massive Stellar Clusters". Jurnal Astronomi. 128 (5): 2295–2305. arXiv:astro-ph/0407373. Bibcode:2004AJ....128.2295L. doi:10.1086/424538.CS1 maint: multiple names: authors list (link)
Böker, Torsten; van der Marel, Roeland P.; Mazzuca, Lisa; Rix, Hans-Walter; Rudnick, Gregory; Ho, Luis C.; Shields, Joseph C. (2001). "A Young Stellar Cluster in the Nucleus of NGC 4449". Jurnal Astronomi. 121 (3): 1473–1481. arXiv:astro-ph/0010542. Bibcode:2001AJ....121.1473B. doi:10.1086/319415.CS1 maint: multiple names: authors list (link)
Bajaja, E.; Huchtmeier, W. K.; Klein, U. (1994). "The extended HI halo in NGC 4449". Astronomi dan Astrofizik. 285: 385–388. Bibcode:1994A&A...285..385B.CS1 maint: multiple names: authors list (link)
Martínez-Delgado, David; Romanowsky, Aaron J.; Gabany, R. Jay; Annibali, Francesca; Arnold, Jacob A.; Fliri, Jürgen; Zibetti, Stefano; van der Marel, Roeland P.; Rix, Hans-Walter; Chonis, Taylor S.; Carballo-Bello, Julio A.; Aloisi, Alessandra; Macciò, Andrea V.; Gallego-Laborda, J.; Brodie, Jean P.; Merrifield, Michael R. (2012). "Dwarfs Gobbling Dwarfs: A Stellar Tidal Stream around NGC 4449 and Hierarchical Galaxy Formation on Small Scales". Warkah Jurnal Astrofizik. 748 (2). arXiv:1112.2154. Bibcode:2012ApJ...748L..24M. doi:10.1088/2041-8205/748/2/L24.CS1 maint: multiple names: authors list (link)
Annibali, F.; Tosi, M.; Aloisi, A.; van der Marel, R. P.; Martinez-Delgado, D. (2012). "Cluster 77 in NGC 4449: The Nucleus of a Satellite Galaxy Being Transformed into a Globular Cluster?". Warkah Jurnal Astrofizik. 745 (1). arXiv:1111.5861. Bibcode:2012ApJ...745L...1A. doi:10.1088/2041-8205/745/1/L1.CS1 maint: multiple names: authors list (link)