ORTEGA HUERTAS, M.; MARTÍNEZ RUIZ, F.; ACQUAFREDDA, P.; PALOMO, I. Platinum-group elements in the cores of potassium feldspar spherules from the Cretaceous-Tertiary boundary at Caravaca (Spain). Estudios Geológicos, [S. l.], v. 50, n. 1-2, p. 3–7, 1994. DOI: 10.3989/egeol.94501-2303. Disponível em: https://estudiosgeol.revistas.csic.es/index.php/estudiosgeol/article/view/303. Acesso em: 28 mar. 2024.