Massey, P; Hunter, D. (January 1998). «Star Formation in R136: A Cluster of O3 Stars Revealed by Hubble Space Telescope Spectroscopy». The Astrophysical Journal493 (1): 180. doi:10.1086/305126. Bibcode: 1998ApJ...493..180M
Bosch, Guillermo; Terlevich, Elena; Terlevich, Roberto (2009). «Gemini/GMOS Search for Massive Binaries in the Ionizing Cluster of 30 Dor». Astronomical Journal137 (2): 3437–3441. doi:10.1088/0004-6256/137/2/3437. Bibcode: 2009AJ....137.3437B.
Grebel, Eva K.; Chu, You-Hua (2000). «Hubble Space Telescope Photometry of Hodge 301: An "Old" Star Cluster in 30 Doradus». Astronomical Journal119 (2): 787–799. doi:10.1086/301218. Bibcode: 2000AJ....119..787G.
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Massey, P; Hunter, D. (January 1998). «Star Formation in R136: A Cluster of O3 Stars Revealed by Hubble Space Telescope Spectroscopy». The Astrophysical Journal493 (1): 180. doi:10.1086/305126. Bibcode: 1998ApJ...493..180M
Bosch, Guillermo; Terlevich, Elena; Terlevich, Roberto (2009). «Gemini/GMOS Search for Massive Binaries in the Ionizing Cluster of 30 Dor». Astronomical Journal137 (2): 3437–3441. doi:10.1088/0004-6256/137/2/3437. Bibcode: 2009AJ....137.3437B.
Grebel, Eva K.; Chu, You-Hua (2000). «Hubble Space Telescope Photometry of Hodge 301: An "Old" Star Cluster in 30 Doradus». Astronomical Journal119 (2): 787–799. doi:10.1086/301218. Bibcode: 2000AJ....119..787G.