# Jan Heller
**Wikidata**: [Q15830136](https://www.wikidata.org/wiki/Q15830136)  
**Source**: https://4ort.xyz/entity/jan-heller-q15830136


## References

1. [regional database of the  Research Library in Hradec Králové](https://aleph.svkhk.cz/F/?func=direct&doc_number=000055954&local_base=hka10&format=999)
2. [regional database of the Municipal Library of Hradec Kralove](https://kmhk.tritius.cz/authority/1952302)
3. Czech National Authority Database
4. [The Fine Art Archive](https://cs.isabart.org/person/125137)
5. [regional database of the  Research Library in Hradec Králové](https://www.svkhk.cz/tools/vyroci.asp?zobr=fulllist)
6. general catalog of BnF
7. Virtual International Authority File
8. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
9. BnF authorities