Cohen, David H.; Gagné, Marc; Leutenegger, Maurice A.; MacArthur, James P.; Wollman, Emma E.; Sundqvist, Jon O.; Fullerton, Alex W.; Owocki, Stanley P. (2011). “Chandra X-ray spectroscopy of the very early O supergiant HD 93129A: constraints on wind shocks and the mass-loss rate”. Monthly Notices of the Royal Astronomical Society415 (4): 3354–3364. doi:10.1111/j.1365-2966.2011.18952.x. ISSN00358711.
Nelan, Edmund P.; Walborn, Nolan R.; Wallace, Debra J.; Moffat, Anthony F. J.; Makidon, Russell B.; Gies, Douglas R.; Panagia, Nino (2004). “Resolving OB Systems in the Carina Nebula with theHubble Space TelescopeFine Guidance Sensor”. The Astronomical Journal128 (1): 323–329. doi:10.1086/420716. ISSN0004-6256.
Cohen, David H.; Gagné, Marc; Leutenegger, Maurice A.; MacArthur, James P.; Wollman, Emma E.; Sundqvist, Jon O.; Fullerton, Alex W.; Owocki, Stanley P. (2011). “Chandra X-ray spectroscopy of the very early O supergiant HD 93129A: constraints on wind shocks and the mass-loss rate”. Monthly Notices of the Royal Astronomical Society415 (4): 3354–3364. doi:10.1111/j.1365-2966.2011.18952.x. ISSN00358711.
Nelan, Edmund P.; Walborn, Nolan R.; Wallace, Debra J.; Moffat, Anthony F. J.; Makidon, Russell B.; Gies, Douglas R.; Panagia, Nino (2004). “Resolving OB Systems in the Carina Nebula with theHubble Space TelescopeFine Guidance Sensor”. The Astronomical Journal128 (1): 323–329. doi:10.1086/420716. ISSN0004-6256.