# Sharp Bounds of the Fekete–Szegö Problem and Second Hankel Determinant for Certain Bi-Univalent Functions Defined by a Novel q-Differential Operator Associated with q-Limaçon Domain

> Research article (Fractal and Fractional, 2023) · cited 23× · AI/ML

**Wikidata**: [openalex:W4382584847](https://www.wikidata.org/wiki/openalex:W4382584847)  
**Source**: https://4ort.xyz/entity/sharp-bounds-of-the-feketeszego-problem-and-second-hankel-determinant-for-certain-bi-univalent-functions-defined-by-a-no