# Pieter Ullersma

> Ph.D. Universiteit Utrecht 1965

**Wikidata**: [Q102313597](https://www.wikidata.org/wiki/Q102313597)  
**Source**: https://4ort.xyz/entity/pieter-ullersma


## References

1. Mathematics Genealogy Project
2. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
3. Dutch National Thesaurus for Author Names