# Robert Hoppeler
**Wikidata**: [Q94838890](https://www.wikidata.org/wiki/Q94838890)  
**Source**: https://4ort.xyz/entity/robert-hoppeler


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. Virtual International Authority File
4. [Source](https://suche.staatsarchiv.djiktzh.ch/detail.aspx?id=1859577)