# Karl-Alexander Hellfaier
**Wikidata**: [Q94945197](https://www.wikidata.org/wiki/Q94945197)  
**Source**: https://4ort.xyz/entity/karl-alexander-hellfaier


## References

1. Catalog of the German National Library
2. BnF authorities
3. Deutsche Biographie
4. VIAF ID
5. Virtual International Authority File
6. Czech National Authority Database