# Q75548860
**Wikidata**: [Q75548860](https://www.wikidata.org/wiki/Q75548860)  
**Source**: https://4ort.xyz/entity/q75548860


## References

1. SIMBAD
2. Searching for multiple stellar populations in the massive, old open cluster Berkeley 39
3. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
4. Gaia Data Release 2
5. Zirconium, barium, lanthanum, and europium abundances in open clusters
6. Abundances of red giants in old open clusters. V. Be 31, Be 32, Be 39, M 67, NGC 188, and NGC 1193