Martí, Ramon, and Mª Mercè Viladrich. “The Round Towers of the Andalusi-Catalan Borders (8th–10th Centuries)”. Journal of Islamic Archaeology 7, no. 2 (April 27, 2021): 157–181. Accessed August 14, 2024. https://journal.equinoxpub.com/JIA/article/view/13425.