A VLT/FLAMES survey for massive binaries in Westerlund 1 - III. The WC9d binary W239 and implications for massive stellar evolutionJ. S. Clark, B. W. Ritchie, I. Negueruela, P. A. Crowther, A. Damineli, F. J. Jablonski and N. LangerA&A, 531 (2011) A28DOI: https://doi.org/10.1051/0004-6361/201116990
