# Sigfrid Fregert
**Wikidata**: [Q112492792](https://www.wikidata.org/wiki/Q112492792)  
**Source**: https://4ort.xyz/entity/sigfrid-fregert


## References

1. Czech National Authority Database
2. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
3. Integrated Authority File
4. National Library of Israel Names and Subjects Authority File