# Ivan Rittig
**Wikidata**: [Q60820798](https://www.wikidata.org/wiki/Q60820798)  
**Source**: https://4ort.xyz/entity/ivan-rittig


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. [Source](https://www.biographien.ac.at/oebl/oebl_R/Rittig_Ivan_1876_1949.xml)
4. CONOR.SR
5. [Österreichisches Biographisches Lexikon 1815–1950](https://www.biographien.ac.at/oebl/oebl_R/Rittig_Ivan_1876_1949.xml)