# Jan Ptáčník
**Wikidata**: [Q95227489](https://www.wikidata.org/wiki/Q95227489)  
**Source**: https://4ort.xyz/entity/jan-pt-n-k-q95227489


## References

1. Czech National Authority Database
2. [Students of the Universities of Prague 1882–1945](http://is.cuni.cz/webapps/archiv/public/person/se/1352843164611347)
3. [Collection of Registry Books at Prague City Archives](http://katalog.ahmp.cz/pragapublica/permalink?xid=2dac0834a2704cdb93ff61a06d4fa33e&scan=39#scan39)
4. Virtual International Authority File
5. Students of the Universities of Prague 1882–1945