# Gell-Mann–Nishijima formula
**Wikidata**: [Q1284746](https://www.wikidata.org/wiki/Q1284746)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Gell-Mann–Nishijima_formula)  
**Source**: https://4ort.xyz/entity/gell-mann-nishijima-formula


## References

1. Freebase Data Dumps. 2013