# Dirk Siersma

> Ph.D. Universiteit van Amsterdam 1974

**Wikidata**: [Q102217589](https://www.wikidata.org/wiki/Q102217589)  
**Source**: https://4ort.xyz/entity/dirk-siersma


## References

1. BnF authorities
2. Mathematics Genealogy Project
3. Virtual International Authority File
4. CiNii Research