# Discriminating between (in)valid External Instruments and (in)valid Exclusion Restrictions

> Research article (Journal of Econometric Methods, 2016) · cited 17× · AI/ML

**Wikidata**: [openalex:W2282048417](https://www.wikidata.org/wiki/openalex:W2282048417)  
**Source**: https://4ort.xyz/entity/discriminating-between-in-valid-external-instruments-and-in-valid-exclusion-restrictions