# Petr Ehrenfeld
**Wikidata**: [Q11815945](https://www.wikidata.org/wiki/Q11815945)  
**Source**: https://4ort.xyz/entity/petr-ehrenfeld


## References

1. Czech National Authority Database
2. [regional database of the Pilsen City Library](https://tritius.plzen.eu/authority/224663)
3. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
4. [Source](https://encyklopedie.brna.cz/home-mmb/?acc=profil_osobnosti&load=2653)
5. Bibliography of the History of the Czech Lands