@article{article, title  = {{A VLT/FLAMES survey for massive binaries in Westerlund 1: III. the WC9d binary W239 and implications for massive stellar evolution}},

 url = {{}},

 year = {{2011}},

 month = {{6}},

 author = {{Clark JS and Ritchie BW and Negueruela I and Crowther PA and Damineli A and Jablonski FJ and Langer N}},

 doi = {{10.1051/0004-6361/201116990}},

 volume = {{531}},

 journal = {{Astronomy and Astrophysics}},

 note = {{Accessed on 2025/11/06}}}