# Permanence of the periodic predator-prey-mutualist system

> Research article (Advances in Difference Equations, 2015) · cited 23× · AI/ML

**Wikidata**: [openalex:W2113777594](https://www.wikidata.org/wiki/openalex:W2113777594)  
**Source**: https://4ort.xyz/entity/permanence-of-the-periodic-predator-prey-mutualist-system