# Otto Křížek
**Wikidata**: [Q95150378](https://www.wikidata.org/wiki/Q95150378)  
**Source**: https://4ort.xyz/entity/otto-k-ek


## References

1. [REGO](https://aleph.vkol.cz/F/?func=find-c&ccl_term=sys=000006578&local_base=svk04)
2. [regional database of the Regional Library of Highlands](https://tritius.kkvysociny.cz/authority/1067773)
3. Czech National Authority Database
4. [Students of the Universities of Prague 1882–1945](http://is.cuni.cz/webapps/archiv/public/person/se/1073949669203725)
5. Virtual International Authority File
6. Bibliography of the History of the Czech Lands
7. Dictionary of Czech librarians