Pérez, Mariel. “Political Power and Modes of Exploitation of Aristocratic Lands: The Estates of Leonese Aristocracy (10th Century)”. Actas y comunicaciones del Instituto de Historia Antigua y Medieval 80 (1). Accessed July 22, 2024. http://revistascientificas.filo.uba.ar/index.php/AcHAM/article/view/2644.