?url_ver=Z39.88-2004&rft_id=doi%3A+10.1177%2F004931032002006+&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Stefano&rft.au=Gattei%2C+Stefano&rft.aulast=Gattei&rft.title=Philosophy+of+the+Social+Sciences&rft.volume=32&rft.date=2002&rft.atitle=The+Ethical+Nature+of+Karl+Popper's+Solution+to+the+Problem+of+Rationality&rft.issn=0048-3931&rft.pages=240-266&rft.issue=2&rft.genre=article