# On the Novel Ulam–Hyers Stability for a Class of Nonlinear $$\psi $$-Hilfer Fractional Differential Equation with Time-Varying Delays

> Research article (Mediterranean Journal of Mathematics, 2019) · cited 43× · AI/ML

**Wikidata**: [openalex:W2968776673](https://www.wikidata.org/wiki/openalex:W2968776673)  
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