# Fully fuzzy multi-item two-stage fixed charge four-dimensional transportation problems with flexible constraints

> Research article (Granular Computing, 2021) · cited 15× · AI/ML

**Wikidata**: [openalex:W4200069275](https://www.wikidata.org/wiki/openalex:W4200069275)  
**Source**: https://4ort.xyz/entity/fully-fuzzy-multi-item-two-stage-fixed-charge-four-dimensional-transportation-problems-with-flexible-constraints