# Helmut Zimmermann

> German astronomer

**Wikidata**: [Q34202067](https://www.wikidata.org/wiki/Q34202067)  
**Source**: https://4ort.xyz/entity/helmut-zimmermann-q34202067


## References

1. Czech National Authority Database
2. data.bibliotheken.nl
3. Integrated Authority File
4. Mathematics Genealogy Project
5. Virtual International Authority File