# Jonas Umbrasas
**Wikidata**: [Q110176768](https://www.wikidata.org/wiki/Q110176768)  
**Source**: https://4ort.xyz/entity/jonas-umbrasas


## References

1. IdRef
2. Integrated Authority File
3. CiNii Research
4. BnF authorities
5. Visuotinė lietuvių enciklopedija Online
6. MAK
7. Czech National Authority Database