# Software Sensor for Online Estimation of the VFA’s Concentration in Anaerobic Digestion Processes via a High-Order Sliding Mode Observer

> Research article (Industrial & Engineering Chemistry Research, 2018) · cited 12× · AI/ML

**Wikidata**: [openalex:W2894779667](https://www.wikidata.org/wiki/openalex:W2894779667)  
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