Berkeley 64

Number of stars per data source

	Reference  150 :  118 stars
	Reference  303 : 1854 stars
	Reference  389 :   75 stars

References

 150
Pandey A.K., Durgapal A.K., Bhatt B.C., Mohan V., Mahra H.S.
(1997) Astron. Astrophys. Suppl. 122, 111
Stellar contents of the open clusters Be 64 and Be 69
1997A&AS..122..111P
 303
Ann H.B., Lee S.H., Sung H., Lee M.G., Kim S.-L., Chun M.-Y., Jeon Y.-B., Park B.-G., Yuk I.-S.
(2002) Astron. J. 123, 905
BOAO photometric survey of galactic open clusters. II. Physical parameters of 12 open clusters
2002AJ....123..905A
 389
Hasegawa T., Malasan H.L., Kawakita H., Obayashi H., Kurabayashi T., Nakai T., Hyakkai M., Arimoto N.
(2004) Publ. Astron. Soc. Japan 56, 295
New photometric data of old open clusters in the anti-galactic center region
2004PASJ...56..295H