@article{article, title  = {{Constraints on massive star formation: Cygnus OB2 was always an association}},

 url = {{http://eprints.whiterose.ac.uk/120299/ }},

 year = {{2014}},

 month = {{2}},

 author = {{Wright NJ and Parker RJ and Goodwin SP and Drake JJ}},

 doi = {{10.1093/mnras/stt2232}},

 volume = {{438}},

 journal = {{Monthly Notices of the Royal Astronomical Society}},

 issue = {{1}},

 pages = {{639-646}},

 note = {{Accessed on 2024/10/23}}}