# Bivariate smoothing of mortality surfaces with cohort and period ridges

> Research article (Stat, 2018) · cited 15× · AI/ML

**Wikidata**: [openalex:W2889221676](https://www.wikidata.org/wiki/openalex:W2889221676)  
**Source**: https://4ort.xyz/entity/bivariate-smoothing-of-mortality-surfaces-with-cohort-and-period-ridges