# Markus Hajek
**Wikidata**: [Q11770400](https://www.wikidata.org/wiki/Q11770400)  
**Source**: https://4ort.xyz/entity/markus-hajek


## References

1. Integrated Authority File
2. Virtual International Authority File
3. International Standard Name Identifier
4. Open Library
5. Faceted Application of Subject Terminology
6. Österreichisches Biographisches Lexikon 1815–1950
7. Alvin
8. NUKAT
9. [Österreichisches Biographisches Lexikon 1815–1950](https://www.biographien.ac.at/oebl/oebl_H/Hajek_Markusz_1861_1941.xml)