# positronium

> bound state of an electron and positron

**Wikidata**: [Q624990](https://www.wikidata.org/wiki/Q624990)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Positronium)  
**Source**: https://4ort.xyz/entity/positronium


## References

1. Integrated Authority File
2. Freebase Data Dumps. 2013
3. National Library of Israel Names and Subjects Authority File
4. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)