# Siwart J. Oldenburg

> Ph.D. Universiteit Leiden 1969

**Wikidata**: [Q102360961](https://www.wikidata.org/wiki/Q102360961)  
**Source**: https://4ort.xyz/entity/siwart-j-oldenburg


## References

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