# Hans Johnen

> German university teacher (1940-2013)

**Wikidata**: [Q20172564](https://www.wikidata.org/wiki/Q20172564)  
**Source**: https://4ort.xyz/entity/hans-johnen


## References

1. [Source](https://www.math.uni-bielefeld.de/obituary/johnen/nachruf-johnen.pdf)
2. Mathematics Genealogy Project
3. Virtual International Authority File