Negueruela, Ignacio; et al. Westerlund 1 as a Template for Massive Star Evolution. Proceedings of the International Astronomical Union. 2007, 3: 301–306. arXiv:0802.4168. doi:10.1017/S1743921308020620. 引文格式1维护:显式使用等标签 (link)
Negueruela, Ignacio; et al. Westerlund 1 as a Template for Massive Star Evolution. Proceedings of the International Astronomical Union. 2007, 3: 301–306. arXiv:0802.4168. doi:10.1017/S1743921308020620. 引文格式1维护:显式使用等标签 (link)
Westerlund, B. E. Photometry and spectroscopy of stars in the region of a highly reddened cluster in ARA. Astronomy and Astrophysics. Supplement. 1987, 70 (3): 311–324. Bibcode:1987A&AS...70..311W. ISSN 0365-0138.
Westerlund, B. E. Photometry and spectroscopy of stars in the region of a highly reddened cluster in ARA. Astronomy and Astrophysics. Supplement. 1987, 70 (3): 311–324. Bibcode:1987A&AS...70..311W. ISSN 0365-0138.