# Helmut W. Schaller

> German professor

**Wikidata**: [Q17418211](https://www.wikidata.org/wiki/Q17418211)  
**Source**: https://4ort.xyz/entity/helmut-w-schaller


## References

1. Integrated Authority File
2. BnF authorities
3. Virtual International Authority File
4. CONOR.SI
5. CONOR.SR
6. Bibliography of the History of the Czech Lands
7. MAK
8. [BnF authorities](http://data.bnf.fr/ark:/12148/cb120338407)