# Costas Papaioannou

> founder of Greek newspaper To Pontiki

**Wikidata**: [Q42431737](https://www.wikidata.org/wiki/Q42431737)  
**Source**: https://4ort.xyz/entity/costas-papaioannou


## References

1. IdRef
2. Integrated Authority File
3. Virtual International Authority File
4. CiNii Research
5. [Source](https://biblionet.gr/%CF%80%CF%81%CE%BF%CF%83%CF%89%CF%80%CE%BF/?personid=74114)
6. [Source](https://www.newsit.gr/ellada/pethane-o-dimosiografos-kostas-papaioannou-idrytis-tis-efimeridas-to-pontiki/3480416/)