# Otto Kren
**Wikidata**: [Q60816280](https://www.wikidata.org/wiki/Q60816280)  
**Source**: https://4ort.xyz/entity/otto-kren


## References

1. Integrated Authority File
2. Czech National Authority Database
3. Catalog of the German National Library
4. [Source](https://www.biographien.ac.at/oebl/oebl_K/Kren_Otto_1876_1937.xml)
5. Alvin
6. NUKAT
7. [Österreichisches Biographisches Lexikon 1815–1950](https://www.biographien.ac.at/oebl/oebl_K/Kren_Otto_1876_1937.xml)
8. Virtual International Authority File