# Hugo John Ivan Gramatzki

> German mathematician and physicist (1882-1957)

**Wikidata**: [Q1624303](https://www.wikidata.org/wiki/Q1624303)  
**Source**: https://4ort.xyz/entity/hugo-john-ivan-gramatzki


## References

1. Integrated Authority File
2. Czech National Authority Database
3. International Standard Name Identifier
4. Virtual International Authority File
5. CONOR.SI