# Zygmunt Greń
**Wikidata**: [Q9392875](https://www.wikidata.org/wiki/Q9392875)  
**Source**: https://4ort.xyz/entity/zygmunt-gre-


## References

1. Czech National Authority Database
2. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
3. e-teatr.pl
4. Virtual International Authority File