Robust soil total carbon prediction using LIBS: integrating expert knowledge with machine learning and external dataset evaluation - Guedes, Wesley Nascimento; Babos, Diego Victor; Freitas, Vitor da Silveira; Neiva, Davi Keglevich; Souza, Daniele de; Martin-Neto, Ladislau; Milori, Debora Marcondes Bastos Pereira; Villas Boas, Paulino Ribeiro (Atomic Spectroscopy, 2025)