# Eduard Köttgen

> German teacher and mathematician

**Wikidata**: [Q106329587](https://www.wikidata.org/wiki/Q106329587)  
**Source**: https://4ort.xyz/entity/eduard-k-ttgen


## References

1. [Source](http://geb.uni-giessen.de/geb/volltexte/2008/6116/pdf/Koessler-Kaak-Kysaeus.pdf)
2. [Source](https://archivdatenbank.bbf.dipf.de/actaproweb/archive.jsf?id=Vz++++++b0ec46d3-4e93-4844-b735-e250c527561b&parent_id=#Vz______b0ec46d3-4e93-4844-b735-e250c527561b)