# Johannes Maria Schumacher

> Ph.D. Vrije Universiteit Amsterdam 1981

**Wikidata**: [Q102205839](https://www.wikidata.org/wiki/Q102205839)  
**Source**: https://4ort.xyz/entity/johannes-maria-schumacher


## References

1. Czech National Authority Database
2. Mathematics Genealogy Project
3. Virtual International Authority File
4. CiNii Research