# Improved Envelope Spectrum via Feature Optimisation-gram (IESFOgram): A novel tool for rolling element bearing diagnostics under non-stationary operating conditions

> Research article (Mechanical Systems and Signal Processing, 2020) · cited 154× · AI/ML

**Wikidata**: [openalex:W3020419263](https://www.wikidata.org/wiki/openalex:W3020419263)  
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