# Yefim Mamontov
**Wikidata**: [Q4280010](https://www.wikidata.org/wiki/Q4280010)  
**Source**: https://4ort.xyz/entity/yefim-mamontov


## References

1. Great Soviet Encyclopedia (1969–1978)
2. Virtual International Authority File
3. Faceted Application of Subject Terminology
4. Historical Encyclopedia of Siberia