# The Hilliness of U.S. Cities

> Research article (Geographical Review, 2015) · cited 10× · AI/ML

**Wikidata**: [openalex:W2110326729](https://www.wikidata.org/wiki/openalex:W2110326729)  
**Source**: https://4ort.xyz/entity/the-hilliness-of-u-s-cities