# Determination of API Gravity and Total and Basic Nitrogen Content by Mid- and Near-Infrared Spectroscopy in Crude Oil with Multivariate Regression and Variable Selection Tools

> Research article (Analytical Letters, 2019) · cited 21× · AI/ML

**Wikidata**: [openalex:W2952358814](https://www.wikidata.org/wiki/openalex:W2952358814)  
**Source**: https://4ort.xyz/entity/determination-of-api-gravity-and-total-and-basic-nitrogen-content-by-mid-and-near-infrared-spectroscopy-in-crude-oil-wit