Andrea Zorzi is associated professor of Medieval History at the Faculty of Letters of the University of Florence. He also teaches Computer Science for Humanistic Research at the Galilean School of Higher Studies of the University of Padua and Historical Research and Digital Resources at the Ca' Foscari University in Venice. Among his publications, as author and editor, we remember: L'amministrazione della giustizia penale nella Repubblica fiorentina. Aspetti e problemi, Firenze, 1988 ("The administration of criminal justice in the Florentine Republic. Features and problems"); Florentine Tuscany. Structures and Practices of Power, Cambridge, 2000; Criminalità e giustizia in Germania e in Italia. Pratiche giudiziarie e linguaggi giuridici tra tardo medioevo ed età moderna, Bologna, 2001 ("Crime and justice in Germany and Italy. Judicial practices and legal languages between the late Middle Ages and the modern age"); Lo Stato territoriale fiorentino (secoli XIV-XV). Ricerche, linguaggi, confronti, Pisa, 2002 ("The Florentine territorial state, XIV-XV centuries. Research, language, debates)"; Le storie e la memoria. In onore di Arnold Esch, Firenze, 2002 ("Stories and memory. In honor of Arnold Esch"); Storia di un dottorato. Storia medievale nell'Università di Firenze: attività, ricerche, pubblicazioni (1983-2003), Firenze, 2004 ("History of a PhD. Medieval history in the University of Florence: activities, researches, publications 1983-2003") and Pratiques sociales et politiques judiciaires dans les villes de l'Occident à la fin du Moyen Age, Roma, 2007. Roberto Delle Donne has been a scholarship holder of the Deutsches Historisches Institut in 1990-1991. PhD in History of European Society, he is professor of Medieval History at the Federico II University of Naples. Among his latest publications: L'Anonimo "nel mezzo della storia" (The Anonymous in the middle of history") in G. Seibt, Anonimo romano. Scrivere la storia alle soglie del Rinascimento, edited by R. Delle Donne, Roma, 2000; Nel 'vortice infinito delle storicizzazioni'. Otto Gerhard Oexle, Adalberone di Laon e la 'scienza storica della cultura' ("In the infinite vortex of historicizations. Otto Gerhard Oexle, Adalberone di Laon and the historical science of culture), in Medioevo Mezzogiorno Mediterraneo. Studi in onore di Mario Del Treppo (Naples, 2000).