NGC 6520

Number of stars per data source

	Reference  508 :    1 star
	Reference  597 :  468 stars

508: Olsen E.H.; (1994) Astron. Astrophys. Suppl. 104, 429; A large, complete, volume-limited sample of G-type dwarfs. I. Completion of Stromgren uvby photometry; 1994A&AS..104..429O
597: Odell A.P.; (2014) Astron. J. 147, 7; A New Look at Open Cluster NGC 6520; 2014AJ....147....7O