Cearreta, A., et al. «Consequences of estuarine sand dredging and dumping on the Urdaibai Reserve of the Biosphere (Bay of Biscay): the case of the “Mundaka left wave”». Journal of Iberian Geology, vol. 34, n.º 2, octubre de 2008, pp. 215-34, https://revistas.ucm.es/index.php/JIGE/article/view/JIGE0808220215A.