# Nikolay Firsov
**Wikidata**: [Q4485009](https://www.wikidata.org/wiki/Q4485009)  
**Source**: https://4ort.xyz/entity/nikolay-firsov


## References

1. Great Soviet Encyclopedia (1969–1978)
2. IdRef
3. Czech National Authority Database
4. Virtual International Authority File
5. Chuvash encyclopedia