Predizione e retrodizione in storia: Note sul modello Popper-Hempel Paolo Rossi In: "Verifiche". Vol 7. Pp 21-35. 1978 2 substantive philosophy of history future/prediction laws/lawfulness
Razionale e irrazionale nella storia // [The rational and irrational in history] Umberto Marcelli 1965 2 substantive philosophy of history laws/lawfulness realism/anti-realism