@misc{misc, title  = {{Constraints on Massive Star Formation: Cygnus OB2 was always an Association}},

 url = {{}},

 year = {{2013}},

 month = {{11}},

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

 doi = {{10.48550/arxiv.1311.4537}},

 note = {{Accessed on 2025/11/04}}}