# Wilhelm von Sommerfeld
**Wikidata**: [Q94762798](https://www.wikidata.org/wiki/Q94762798)  
**Source**: https://4ort.xyz/entity/wilhelm-von-sommerfeld-q94762798


## References

1. Catalog of the German National Library
2. Integrated Authority File
3. Virtual International Authority File
4. Bibliography of the History of the Czech Lands