Arche, A., G. Evans, and E. Clavell. 2010. “ Some considerations on the initiation of the present SE Ebro river drainage system: Post- or pre-Messinian? ”. Journal of Iberian Geology 36, nº 1:: 73-85. https://revistas.ucm.es/index.php/JIGE/article/view/JIGE1010120073A