Marcos Cobaleda, M. “The Trace of Sijilmasa in the Almoravid Walls of Marrakech and Al-Andalus”. Quiroga. Revista De Patrimonio Iberoamericano, no. 8, Dec. 2015, pp. 10-22, https://revistaseug.ugr.es/index.php/quiroga/article/view/16384.