# Petko Valtchev

> researcher

**Wikidata**: [Q89558694](https://www.wikidata.org/wiki/Q89558694)  
**Source**: https://4ort.xyz/entity/petko-valtchev


## References

1. Integrated Authority File
2. IdRef
3. [Source](https://www.theses.fr/1999GRE10276)
4. National Library of Israel Names and Subjects Authority File