# Ad Ridder

> researcher

**Wikidata**: [Q62669090](https://www.wikidata.org/wiki/Q62669090)  
**Source**: https://4ort.xyz/entity/ad-ridder


## References

1. Virtual International Authority File
2. Mathematics Genealogy Project
3. [Source](https://data.dnb.de/opendata/authorities-gnd-person_lds.rdf.gz)
4. [ORCID Public Data File 2020](https://pub.orcid.org/v3.0_rc1/0000-0002-2414-0548/researcher-urls/1308482)
5. National Library of Israel Names and Subjects Authority File