# Paul Birukoff

> Tolstoy's biographer (1860–1931)

**Wikidata**: [Q4087139](https://www.wikidata.org/wiki/Q4087139)  
**Source**: https://4ort.xyz/entity/paul-birukoff


## References

1. Integrated Authority File
2. Great Soviet Encyclopedia (1969–1978)
3. BnF authorities
4. CiNii Research
5. MusicBrainz
6. Historical Dictionary of Switzerland
7. CONOR.SI
8. Library of Congress Control Number
9. LIBRIS. 2010
10. Regional Database of the Central Bohemian Research Library in Kladno