The Use of Vis-NIR-SWIR Spectroscopy and X-ray Fluorescence in the Development of Predictive Models: A Step forward in the Quantification of Nitrogen, Total Organic Carbon and Humic Fractions in Ferralsols. - Bruna Coelho de Lima; José Alexandre Melo Demattê; Carlos H. dos Santos; Carlos S. Tiritan; Raúl Roberto Poppiel; Marcos Rafael Nanni; Renan Falcioni; Caio Almeida de Oliveira; Nicole Ghinzelli Vedana; Guilherme Zimmermann; Amanda Silveira Reis (Remote. Sens., 2024)