# Josef Challupper
**Wikidata**: [Q95375021](https://www.wikidata.org/wiki/Q95375021)  
**Source**: https://4ort.xyz/entity/josef-challupper


## References

1. Czech National Authority Database
2. [Students of the Universities of Prague 1882–1945](http://is.cuni.cz/webapps/archiv/public/person/se/1107333315012317)
3. Regional Database of the Central Bohemian Research Library in Kladno
4. Virtual International Authority File
5. Český hudební slovník osob a institucí
6. Students of the Universities of Prague 1882–1945
7. Virtual Study of Theatre Institute