# Josef Brtek
**Wikidata**: [Q27942019](https://www.wikidata.org/wiki/Q27942019)  
**Source**: https://4ort.xyz/entity/josef-brtek-q27942019


## References

1. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
2. Czech National Authority Database
3. Virtual International Authority File
4. Bibliography of the History of the Czech Lands
5. [Regional Database of the Central Bohemian Research Library in Kladno](https://ipac.svkkl.cz/arl-kl/cs/detail-kl_us_auth-p0023807-Brtek-Josef-1961)