# Johan A. C. Kolk

> Ph.D. Universiteit Utrecht 1977

**Wikidata**: [Q93433995](https://www.wikidata.org/wiki/Q93433995)  
**Source**: https://4ort.xyz/entity/johan-a-c-kolk


## References

1. BnF authorities
2. Mathematics Genealogy Project
3. Czech National Authority Database
4. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
5. CiNii Research
6. Virtual International Authority File
7. VIAF ID
8. CONOR.SI
9. National Library of Israel Names and Subjects Authority File