# Josef Demmel
**Wikidata**: [Q100920](https://www.wikidata.org/wiki/Q100920)  
**Source**: https://4ort.xyz/entity/josef-demmel


## References

1. Catalog of the German National Library
2. Czech National Authority Database
3. [Source](http://viaf.org/viaf/data/viaf-20170101-links.txt.gz)
4. Virtual International Authority File