# Two-echelon vehicle routing problem with simultaneous pickup and delivery: Mathematical model and heuristic approach

> Research article (Computers & Industrial Engineering, 2017) · cited 157× · AI/ML

**Wikidata**: [openalex:W2766120497](https://www.wikidata.org/wiki/openalex:W2766120497)  
**Source**: https://4ort.xyz/entity/two-echelon-vehicle-routing-problem-with-simultaneous-pickup-and-delivery-mathematical-model-and-heuristic-approach