I. Subias, A Yuste, I. Fanlo, C. Fernandez-Nieto, and J.M. Gonzalez Lopez. 1999. “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”. Netherlands Journal of Geosciences, January, 87-102. https://njgjournal.nl/index.php/njg/article/view/12266.