<https://www.ottocentenariouniversitadipadova.it/images/il-filosofo-norberto-bobbio-e-marcello-cresti-rettore-1984-1987-nel-1985/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.ottocentenariouniversitadipadova.it/immagini/protagonisti/>