# Julius Hartmann

> Danish physicist (1881–1951)

**Wikidata**: [Q14928146](https://www.wikidata.org/wiki/Q14928146)  
**Source**: https://4ort.xyz/entity/julius-hartmann


## References

1. Integrated Authority File
2. Czech National Authority Database
3. gravsted.dk
4. Virtual International Authority File
5. Dansk Biografisk Leksikon
6. NUKAT
7. Sapere Encyclopedia
8. IdRef
9. Treccani's Enciclopedia on line