# Josef Hopmann

> German astronomer (1890–1975)

**Wikidata**: [Q89896](https://www.wikidata.org/wiki/Q89896)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Josef_Hopmann)  
**Source**: https://4ort.xyz/entity/josef-hopmann


## References

1. Integrated Authority File
2. Mathematics Genealogy Project
3. International Standard Name Identifier
4. Virtual International Authority File
5. [Source](https://books.google.de/books?id=8qmootml0acC)
6. Freebase Data Dumps. 2013