# Combined Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA): an efficient chemometric approach in aged gel inks discrimination

> Research article (Australian Journal of Forensic Sciences, 2018) · cited 28× · AI/ML

**Wikidata**: [openalex:W2804134851](https://www.wikidata.org/wiki/openalex:W2804134851)  
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