# Jan Kupka
**Wikidata**: [Q95175331](https://www.wikidata.org/wiki/Q95175331)  
**Source**: https://4ort.xyz/entity/jan-kupka-q95175331


## References

1. Czech National Authority Database
2. [REGO](https://aleph.vkol.cz/F/?func=find-c&ccl_term=sys=000011771&local_base=svk04)
3. [Olomouc City Library regional database](https://tritius.kmol.cz/authority/772010)
4. Virtual International Authority File
5. Personal Authority Wikibase of the Czech Republic
6. Bibliography of the History of the Czech Lands