# Testing the impossible: Identifying exclusion restrictions

> Research article (Journal of Econometrics, 2020) · cited 175× · AI/ML

**Wikidata**: [openalex:W2620932907](https://www.wikidata.org/wiki/openalex:W2620932907)  
**Source**: https://4ort.xyz/entity/testing-the-impossible-identifying-exclusion-restrictions