# A derivative-free nonlinear Kalman filtering approach using flat inputs

> Research article (International Journal of Control, 2021) · cited 32× · AI/ML

**Wikidata**: [openalex:W3169172890](https://www.wikidata.org/wiki/openalex:W3169172890)  
**Source**: https://4ort.xyz/entity/a-derivative-free-nonlinear-kalman-filtering-approach-using-flat-inputs