# Existence and Ulam stability for nonlinear implicit fractional differential equations with Hadamard derivative

> Research article (Studia Universitatis Babes-Bolyai Matematica, 2017) · cited 92× · AI/ML

**Wikidata**: [openalex:W2592060147](https://www.wikidata.org/wiki/openalex:W2592060147)  
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