Antonio Fabregas is Full Professor of Spanish Linguistics at the University of Tromso. He took his Ph.D. in Madrid in 2005. He has worked extensively on the morphology of Romance languages and has also published papers on syntax, semantics and phonology. Sergio Scalise is Full Professor of General Linguistics at the University of Bologna. He has worked exstensively on theoretical morphology and on morphology of Italian. He is director of the Journal "Lingue e Linguaggio" and co-organizer of the Mediterranean Morphology Meetings. He has given courses, seminars and lectures in several universities (Madrid, Barcelona, Girona, Paris, Cambridge, Hamburg, Vienna, Tokyo, New York, Amsterdam, Rome, Budapest, etc.).