# Johan Antoon Marie Janssen

> Ph.D. Universiteit Utrecht 1988

**Wikidata**: [Q102313618](https://www.wikidata.org/wiki/Q102313618)  
**Source**: https://4ort.xyz/entity/johan-antoon-marie-janssen


## References

1. Mathematics Genealogy Project
2. Dutch National Thesaurus for Author Names