# Krzysztof Kostrzewa
**Wikidata**: [Q122507762](https://www.wikidata.org/wiki/Q122507762)  
**Source**: https://4ort.xyz/entity/krzysztof-kostrzewa


## References

1. Catalog of the German National Library
2. Virtual International Authority File
3. Polish Science
4. NUKAT
5. MAK