# Ranking of petrochemical companies using preferential voting at unequal levels of voting power through data envelopment analysis

> Research article (Mathematical sciences, 2019) · cited 11× · AI/ML

**Wikidata**: [openalex:W2971733358](https://www.wikidata.org/wiki/openalex:W2971733358)  
**Source**: https://4ort.xyz/entity/ranking-of-petrochemical-companies-using-preferential-voting-at-unequal-levels-of-voting-power-through-data-envelopment-