YONG, He; YONGNI, Shao; PEREIRA, A G; G, A. H.; HAIYAN, Cen. Spectral Feature Characterization and Nitrogen Content Prediction in Soils with Different Particle Sizes and Moisture Contents. International Journal of Agricultural and Biological Engineering, [S. l.], v. 1, n. 1, p. 43–50, 2008. Disponível em: https://www.ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/16. Acesso em: 27 feb. 2026.