# Arnold Janssen

> Dr. rer. nat. Universität Dortmund 1979

**Wikidata**: [Q102174544](https://www.wikidata.org/wiki/Q102174544)  
**Source**: https://4ort.xyz/entity/arnold-janssen-q102174544


## References

1. BnF authorities
2. Mathematics Genealogy Project
3. Virtual International Authority File
4. CiNii Research