# Ladislav Ptáček
**Wikidata**: [Q55681263](https://www.wikidata.org/wiki/Q55681263)  
**Source**: https://4ort.xyz/entity/ladislav-pt-ek-q55681263


## References

1. Integrated Authority File
2. Czech National Authority Database
3. [The Fine Art Archive](https://cs.isabart.org/person/52348)
4. Regional Database of the Central Bohemian Research Library in Kladno