Willy Clarysse is a Fellow of the Royal Flemish Academy of Belgium and teaches in the Departments of Classics and the Ancient Near East at the Katholieke Universiteit Leuven. He is the author of Prosopographia Ptolemaica IX, Addenda et corrigenda au volume III (1981), The Petrie Papyri (second edition), I. The Wills (1991) and of the Leuven Database of Ancient Books (htpp: //ldab.arts.kuleuven.ac.be).