Meléndez, G., K.N. Page, J. Bello, y J. Ramajo. 2007. «Callovian and the Callovian - Oxfordian transition sedimentary record in NE Iberian Chain: Taphonomic analysis and palaeogeography». Journal of Iberian Geology 33 (2): 261-82. https://revistas.ucm.es/index.php/JIGE/article/view/JIGE0707210261A.