# Valerian F. Širkov
**Wikidata**: [Q55902985](https://www.wikidata.org/wiki/Q55902985)  
**Source**: https://4ort.xyz/entity/valerian-f-irkov


## References

1. CERL Thesaurus
2. Catalog of the German National Library
3. NUKAT
4. National Library of Israel Names and Subjects Authority File