# Ludwig Martens
**Wikidata**: [Q94867397](https://www.wikidata.org/wiki/Q94867397)  
**Source**: https://4ort.xyz/entity/ludwig-martens-q94867397


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. [Source](https://kalliope-verbund.info/DE-611-BF-110044)