# Hans Oppikofer
**Wikidata**: [Q94890906](https://www.wikidata.org/wiki/Q94890906)  
**Source**: https://4ort.xyz/entity/hans-oppikofer


## References

1. Catalog of the German National Library
2. Integrated Authority File
3. Virtual International Authority File
4. CiNii Research
5. CONOR.SI