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ijet.itd.cnr.it/search/authors/view?firstName=Antonio&middleName=&lastName=Calvani&affiliation=Facolt%C3%A0%20di%20Scienze%20della%20Formazione%2C%20Universit%C3%A0%20di%20Firenze%2C%20Firenze&country=IT (port 80)