# Joannes Fredericus Christianus van Velsen

> Ph.D. Universiteit Utrecht 1976

**Wikidata**: [Q102313599](https://www.wikidata.org/wiki/Q102313599)  
**Source**: https://4ort.xyz/entity/joannes-fredericus-christianus-van-velsen


## References

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