# Sigismund Calles
**Wikidata**: [Q2284786](https://www.wikidata.org/wiki/Q2284786)  
**Source**: https://4ort.xyz/entity/sigismund-calles


## References

1. Integrated Authority File
2. International Standard Name Identifier
3. Catalogue of the Library of the Pontifical Gregorian University
4. Czech National Authority Database
5. Virtual International Authority File
6. CONOR.SI
7. Provenio