# Matthias Kettner

> German philosopher

**Wikidata**: [Q63974792](https://www.wikidata.org/wiki/Q63974792)  
**Source**: https://4ort.xyz/entity/matthias-kettner


## References

1. SUDOC
2. Catalog of the German National Library
3. [Source](http://www.insosci.eu/team/witten/prof-dr-matthias-kettner/)
4. Integrated Authority File
5. Virtual International Authority File
6. CiNii Research
7. YouTube API