# Willem Bartjens

> Dutch mathematician

**Wikidata**: [Q1912407](https://www.wikidata.org/wiki/Q1912407)  
**Source**: https://4ort.xyz/entity/willem-bartjens


## References

1. De Nederlandsche Leeuw
2. ECARTICO
3. Virtual International Authority File
4. Biografisch Portaal
5. Digital Library for Dutch Literature
6. MAK