# E∑ti sum

> 2016 edition of written work by Raúl Fernández Vítores

**Wikidata**: [Q125359041](https://www.wikidata.org/wiki/Q125359041)  
**Source**: https://4ort.xyz/entity/e-ti-sum-q125359041


## References

1. datos.bne.es
2. Goodreads