“The Origin of Interrogation Marks in the Medieval Manuscripts of Plato’s Republic and Its Significance in the Tradition of Plato’s Dialogues” in: Dialogues on Plato's Politeia (Republic):Selected Papers from the Ninth Sysmposium Platonicum., edited by Noburu Notomi and Luc Brisson, Sankt Augustin, Academia Verlag, 2013: