I. Subias, A Yuste, I. Fanlo, C. Fernandez-Nieto, and J.M. Gonzalez Lopez, “Geochemical, and stable and radiogenic isotope records in Devonian and Early Carboniferous carbonates from Valle de Tena, central Pyrenees (Spain): evidence for their diagenetic environments”, njg, pp. 87-102, Jan. 1999.