# Valentin Portnykh
**Wikidata**: [Q93262243](https://www.wikidata.org/wiki/Q93262243)  
**Source**: https://4ort.xyz/entity/valentin-portnykh


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. Virtual International Authority File
4. Index Theologicus
5. Catalogue of the Library of the Pontifical University of the Holy Cross