# Pickup and delivery problem with time windows: A new compact two-index formulation

> Research article (Operations Research Letters, 2017) · cited 69× · AI/ML

**Wikidata**: [openalex:W2339713317](https://www.wikidata.org/wiki/openalex:W2339713317)  
**Source**: https://4ort.xyz/entity/pickup-and-delivery-problem-with-time-windows-a-new-compact-two-index-formulation