# Geir Ulfstein

> Norwegian professor

**Wikidata**: [Q11971731](https://www.wikidata.org/wiki/Q11971731)  
**Source**: https://4ort.xyz/entity/geir-ulfstein


## References

1. BnF authorities
2. general catalog of BnF
3. Virtual International Authority File
4. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
5. IdRef
6. National Library of Israel Names and Subjects Authority File
7. Catalogo of the National Library of India