# Christiaan Dirk Hartogh

> Ph.D. Universiteit Leiden 1958

**Wikidata**: [Q102346705](https://www.wikidata.org/wiki/Q102346705)  
**Source**: https://4ort.xyz/entity/christiaan-dirk-hartogh


## References

1. Mathematics Genealogy Project
2. Integrated Authority File