# Improving the efficiency of last-mile delivery with the flexible drones traveling salesman problem

> Research article (Expert Systems with Applications, 2022) · cited 30× · AI/ML

**Wikidata**: [openalex:W4289755354](https://www.wikidata.org/wiki/openalex:W4289755354)  
**Source**: https://4ort.xyz/entity/improving-the-efficiency-of-last-mile-delivery-with-the-flexible-drones-traveling-salesman-problem