Carrión, José Sebastián, A.R. Prieto, Manuel Munuera, y Cristina Navarro. «Modern cave pollen in an arid environment and its application to describe palaeorecords». Complutum, vol. 13, vol. 13, 2002, pp. 7-18, https://revistas.ucm.es/index.php/CMPL/article/view/CMPL0202110007A.