# Stefan Jan Kempisty

> Ph.D. Uniwersytet Jagielloński 1919

**Wikidata**: [Q9345043](https://www.wikidata.org/wiki/Q9345043)  
**Source**: https://4ort.xyz/entity/stefan-jan-kempisty


## References

1. BnF authorities
2. Mathematics Genealogy Project
3. Virtual International Authority File
4. NUKAT
5. MAK
6. Sejm-Wielki.pl