# Stefan Keller

> professor

**Wikidata**: [Q133677643](https://www.wikidata.org/wiki/Q133677643)  
**Source**: https://4ort.xyz/entity/stefan-keller-q133677643


## References

1. [Source](https://postgresql.life/post/stefan_keller/)
2. [Source](https://pretalx.com/fossgis2021/talk/WGRAXU/)