# Improved order in Hilfer fractional differential systems: Solvability and optimal control problem for hemivariational inequalities

> Research article (Chaos Solitons & Fractals, 2024) · cited 14× · AI/ML

**Wikidata**: [openalex:W4403132592](https://www.wikidata.org/wiki/openalex:W4403132592)  
**Source**: https://4ort.xyz/entity/improved-order-in-hilfer-fractional-differential-systems-solvability-and-optimal-control-problem-for-hemivariational-ine