# Repeated collaboration of inventors across European regions

> Research article (European Planning Studies, 2021) · cited 23× · AI/ML

**Wikidata**: [openalex:W3155714255](https://www.wikidata.org/wiki/openalex:W3155714255)  
**Source**: https://4ort.xyz/entity/repeated-collaboration-of-inventors-across-european-regions