# Heinz Stefan Bartkowiak
**Wikidata**: [Q94943301](https://www.wikidata.org/wiki/Q94943301)  
**Source**: https://4ort.xyz/entity/heinz-stefan-bartkowiak


## References

1. Catalog of the German National Library
2. Czech National Authority Database
3. Integrated Authority File
4. [Source](https://kalliope-verbund.info/DE-611-BF-88811)
5. Virtual International Authority File