# Multi-level multi-stage efficiency measurement: the case of innovation systems

> Research article (Operational Research, 2015) · cited 46× · AI/ML

**Wikidata**: [openalex:W2059616398](https://www.wikidata.org/wiki/openalex:W2059616398)  
**Source**: https://4ort.xyz/entity/multi-level-multi-stage-efficiency-measurement-the-case-of-innovation-systems