C. Zazo, C.J. Dabrio, F. Borja, J.L. Goy, A.M. Lezine, J. Lario, M.D. Polo, M. Hoyos, and J.R. Boersma. “Pleistocene and Holocene Aeolian Facies Along the Huelva Coast (southern Spain): Climatic and Neotectonic Implications”. Netherlands Journal of Geosciences, vol. 77, Jan. 1999, pp. 209-24, https://njgjournal.nl/index.php/njg/article/view/12213.