Santos SalazarIgor. Crisis? What Crisis? Political Articulation and Government in the March of Tuscany through Placita and Diplomas from Guy of Spoleto to Berengar II. Reti Medievali Rivista 17, no. 2 (settembre 12, 2016): 251-279. Consultato luglio 2, 2025. http://www.serena.unina.it/index.php/rm/article/view/5005.