Diapositiva di PowerPoint
http://www.unipv.it/webphilos_lab/courses/papers/action_based.htm
L. Magnani (2001), Abduction, Reason, and Science. Processes of Discovery and Explanation, Kluwer Academic/Plenum Publishers, New York.
http://www.unipv.it/webphilos_lab/courses/papers/abduction_reason.htm