# Clemens Schaefer

> German physicist (1878–1968)

**Wikidata**: [Q1100067](https://www.wikidata.org/wiki/Q1100067)  
**Source**: https://4ort.xyz/entity/clemens-schaefer


## References

1. Integrated Authority File
2. BnF authorities
3. Mathematics Genealogy Project
4. Czech National Authority Database
5. International Standard Name Identifier
6. Virtual International Authority File
7. CiNii Research
8. [Source](https://kalliope-verbund.info/DE-611-BF-110950)
9. Marburger Professorenkatalog
10. Brockhaus Enzyklopädie
11. [BnF authorities](http://data.bnf.fr/ark:/12148/cb12339471c)
12. CONOR.SI
13. Autoritats UB
14. National Library of Israel Names and Subjects Authority File