# A Family of Derivative-Free Conjugate Gradient Methods for Constrained Nonlinear Equations and Image Restoration

> Research article (IEEE Access, 2020) · cited 55× · AI/ML

**Wikidata**: [openalex:W3084810697](https://www.wikidata.org/wiki/openalex:W3084810697)  
**Source**: https://4ort.xyz/entity/a-family-of-derivative-free-conjugate-gradient-methods-for-constrained-nonlinear-equations-and-image-restoration