1.
Arche, A., Díez, J.B., and López Gómez, J. 2007. Identification of the Early Permian (Autunian) in the subsurface of the Ebro Basin, NE Spain, and its paleogeographic consequences. Journal of Iberian Geology 33, 1, 125–133. Retrieved February 16, 2025 from https://revistas.ucm.es/index.php/JIGE/article/view/JIGE0707120125A