# Rudolf Ptáček
**Wikidata**: [Q95156319](https://www.wikidata.org/wiki/Q95156319)  
**Source**: https://4ort.xyz/entity/rudolf-pt-ek


## References

1. Database of the Military Historical Archive
2. [Database of the Military Historical Archive](http://www.vuapraha.cz/soldier/20509419)
3. [regional database of the  Research Library in Hradec Králové](https://www.svkhk.cz/tools/vyroci.asp?zobr=fulllist)
4. Czech National Authority Database
5. Virtual International Authority File
6. Database of members of the Czechoslovak Republic of military units abroad for the World War II