An advanced image processing and multivariate statistical methodology to interpret Micro-EDXRF 2D maps: Uncovering heterogeneity and spatial distribution patterns of rare earth elements in phosphogypsum. - Barbosa, Sofia; Moura, Pedro Catalão; Dias, António; Haneklaus, Nils; Bellefqih, Hajar; Kiegiel, Katarzyna; Canovas, Carlos Ruiz; Nieto, José Miguel; Bilal, Essaid; Pessanha, Sofia (Chemosphere, 2025)