(1986) (awarded the Praemium Urbis in Rome 1987 and the Haskins Medal of the Medieval Academy 1988) The Atina Dossier of Peter the Deacon of Monte Cassino.
(1986) (erhielt den Praemium Urbis-Preis in Rom 1987 und die Haskins Medal of the Medieval Academy 1988) The Atina Dossier of Peter the Deacon of Monte Cassino.