* Albert Presas i Puig: "Ostilio Ricci, the Practical Education and the Canon of Technical Knowledge at the Beginning of the Italian Renaissance," Max-Planck-Institut für Wissenschaftsgeschichte, Berlin, 2002. ###>* Albert Presas i Puig, "Ostilio Ricci, the Practical Education and the Canon of Technical Knowledge at the Beginning of the Italian Renaissance," Max-Planck-Institut für Wissenschaftsgeschichte, Berlin, 2002.