# How a product’s design hierarchy shapes the evolution of technological knowledge—Evidence from patent-citation networks in wind power

> Research article (Research Policy, 2016) · cited 103× · AI/ML

**Wikidata**: [openalex:W3124490493](https://www.wikidata.org/wiki/openalex:W3124490493)  
**Source**: https://4ort.xyz/entity/how-a-products-design-hierarchy-shapes-the-evolution-of-technological-knowledgeevidence-from-patent-citation-networks-in