Dougherty, S. M.; Clark, J. S.; Negueruela, I.; Johnson, T.; Chapman, J. M. (2010). «Radio emission from the massive stars in the galactic super star cluster Westerlund 1». Astronomy and Astrophysics. 511: A58. Bibcode:2010A&A...511A..58D. arXiv:0912.4165. doi:10.1051/0004-6361/200913505
Lim, Beomdu; Chun, Moo-Young; Sung, Hwankyung; Park, Byeong-Gon; Lee, Jae-Joon; Sohn, Sangmo T.; Hur, Hyeonoh; Bessell, Michael S. (2013). «The Starburst Cluster Westerlund 1: The Initial Mass Function and Mass Segregation». The Astronomical Journal. 145 (2). 46 páginas. Bibcode:2013AJ....145...46L. arXiv:1211.5832. doi:10.1088/0004-6256/145/2/46
Clark, J. S.; Ritchie, B. W.; Negueruela, I.; Crowther, P. A.; Damineli, A.; Jablonski, F. J.; Langer, N. (2011). «A VLT/FLAMES survey for massive binaries in Westerlund 1». Astronomy & Astrophysics. 531: A28. Bibcode:2011A&A...531A..28C. arXiv:1105.0776. doi:10.1051/0004-6361/201116990
Wright, N. J.; Wesson, R.; Drew, J. E.; Barentsen, G.; Barlow, M. J.; Walsh, J. R.; Zijlstra, A.; Drake, J. J.; Eisloffel, J.; Farnhill, H. J. (16 de outubro de 2013). «The ionized nebula surrounding the red supergiant W26 in Westerlund 1». Monthly Notices of the Royal Astronomical Society: Letters. 437 (1): L1–L5. Bibcode:2014MNRAS.437L...1W. arXiv:1309.4086. doi:10.1093/mnrasl/slt127
Dougherty, S. M.; Clark, J. S.; Negueruela, I.; Johnson, T.; Chapman, J. M. (2010). «Radio emission from the massive stars in the galactic super star cluster Westerlund 1». Astronomy and Astrophysics. 511: A58. Bibcode:2010A&A...511A..58D. arXiv:0912.4165. doi:10.1051/0004-6361/200913505
Lim, Beomdu; Chun, Moo-Young; Sung, Hwankyung; Park, Byeong-Gon; Lee, Jae-Joon; Sohn, Sangmo T.; Hur, Hyeonoh; Bessell, Michael S. (2013). «The Starburst Cluster Westerlund 1: The Initial Mass Function and Mass Segregation». The Astronomical Journal. 145 (2). 46 páginas. Bibcode:2013AJ....145...46L. arXiv:1211.5832. doi:10.1088/0004-6256/145/2/46
Westerlund, Bengt (1961). «A Heavily Reddened Cluster in ARA». Publications of the Astronomical Society of the Pacific. 73. 51 páginas. Bibcode:1961PASP...73...51W. doi:10.1086/127618
Clark, J. S.; Ritchie, B. W.; Negueruela, I.; Crowther, P. A.; Damineli, A.; Jablonski, F. J.; Langer, N. (2011). «A VLT/FLAMES survey for massive binaries in Westerlund 1». Astronomy & Astrophysics. 531: A28. Bibcode:2011A&A...531A..28C. arXiv:1105.0776. doi:10.1051/0004-6361/201116990
Wright, N. J.; Wesson, R.; Drew, J. E.; Barentsen, G.; Barlow, M. J.; Walsh, J. R.; Zijlstra, A.; Drake, J. J.; Eisloffel, J.; Farnhill, H. J. (16 de outubro de 2013). «The ionized nebula surrounding the red supergiant W26 in Westerlund 1». Monthly Notices of the Royal Astronomical Society: Letters. 437 (1): L1–L5. Bibcode:2014MNRAS.437L...1W. arXiv:1309.4086. doi:10.1093/mnrasl/slt127
Dougherty, S. M.; Clark, J. S.; Negueruela, I.; Johnson, T.; Chapman, J. M. (2010). «Radio emission from the massive stars in the galactic super star cluster Westerlund 1». Astronomy and Astrophysics. 511: A58. Bibcode:2010A&A...511A..58D. arXiv:0912.4165. doi:10.1051/0004-6361/200913505
Lim, Beomdu; Chun, Moo-Young; Sung, Hwankyung; Park, Byeong-Gon; Lee, Jae-Joon; Sohn, Sangmo T.; Hur, Hyeonoh; Bessell, Michael S. (2013). «The Starburst Cluster Westerlund 1: The Initial Mass Function and Mass Segregation». The Astronomical Journal. 145 (2). 46 páginas. Bibcode:2013AJ....145...46L. arXiv:1211.5832. doi:10.1088/0004-6256/145/2/46
Westerlund, Bengt (1961). «A Heavily Reddened Cluster in ARA». Publications of the Astronomical Society of the Pacific. 73. 51 páginas. Bibcode:1961PASP...73...51W. doi:10.1086/127618
Westerlund, B. E. (1987). «Photometry and spectroscopy of stars in the region of a highly reddened cluster in ARA». Astronomy and Astrophysics Supplement Series. 70. 311 páginas. Bibcode:1987A&AS...70..311W. ISSN0365-0138
Clark, J. S.; Ritchie, B. W.; Negueruela, I.; Crowther, P. A.; Damineli, A.; Jablonski, F. J.; Langer, N. (2011). «A VLT/FLAMES survey for massive binaries in Westerlund 1». Astronomy & Astrophysics. 531: A28. Bibcode:2011A&A...531A..28C. arXiv:1105.0776. doi:10.1051/0004-6361/201116990
Wright, N. J.; Wesson, R.; Drew, J. E.; Barentsen, G.; Barlow, M. J.; Walsh, J. R.; Zijlstra, A.; Drake, J. J.; Eisloffel, J.; Farnhill, H. J. (16 de outubro de 2013). «The ionized nebula surrounding the red supergiant W26 in Westerlund 1». Monthly Notices of the Royal Astronomical Society: Letters. 437 (1): L1–L5. Bibcode:2014MNRAS.437L...1W. arXiv:1309.4086. doi:10.1093/mnrasl/slt127
Westerlund, B. E. (1987). «Photometry and spectroscopy of stars in the region of a highly reddened cluster in ARA». Astronomy and Astrophysics Supplement Series. 70. 311 páginas. Bibcode:1987A&AS...70..311W. ISSN0365-0138