# Michael Hartmann
**Wikidata**: [Q94843145](https://www.wikidata.org/wiki/Q94843145)  
**Source**: https://4ort.xyz/entity/michael-hartmann-q94843145


## References

1. Czech National Authority Database
2. Catalog of the German National Library
3. CERL Thesaurus
4. NUKAT
5. MAK