# Estimating the friction angle of black shale core specimens with hybrid-ANN approaches

> Research article (Measurement, 2019) · cited 48× · AI/ML

**Wikidata**: [openalex:W2952135913](https://www.wikidata.org/wiki/openalex:W2952135913)  
**Source**: https://4ort.xyz/entity/estimating-the-friction-angle-of-black-shale-core-specimens-with-hybrid-ann-approaches