# Jan J. Rutkowski
**Wikidata**: [Q112395015](https://www.wikidata.org/wiki/Q112395015)  
**Source**: https://4ort.xyz/entity/jan-j-rutkowski


## References

1. Catalog of the German National Library
2. Czech National Authority Database
3. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)