# ISO 4

> international standard which defines a uniform system for the abbreviation of serial titles

**Wikidata**: [Q2562292](https://www.wikidata.org/wiki/Q2562292)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/ISO_4)  
**Source**: https://4ort.xyz/entity/iso-4


## References

1. [Source](https://www.iso.org/maintenance_agencies.html)
2. [ISO 4:1972. Documentation — International code for the abbreviation of titles of periodicals](https://www.iso.org/standard/3567.html)
3. Freebase Data Dumps. 2013
4. [Source](https://www.issn.org/services/online-services/access-to-the-ltwa/)
5. Recommendation X.660 (07/2011): Information technology – Procedures for the operation of object identifier registration authorities: General procedures and top arcs of the international object identifier tree