?url_ver=Z39.88-2004&rft_id=10.1103%2FPhysRevLett.85.4848&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Stefano&rft.aulast=Ciliberti&rft.au=Ciliberti%2C+Stefano&rft.atitle=Discretized+diffusion+processes&rft.date=October+2000&rft.issue=23&rft.volume=85&rft.title=Physical+Review+Letters&rft.issn=0031-9007&rft.pages=4848-4851&rft.genre=article