?url_ver=Z39.88-2004&rft_id=10.1103%2FPhysRevE.56.R1291&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Raffaele&rft.au=Cafiero%2C+Raffaele&rft.aulast=Cafiero&rft.pages=R1291-R1294&rft.issn=1539-3755&rft.atitle=Surface+effects+in+invasion+percolation&rft.title=Physical+Review+E&rft.date=August+1997&rft.issue=2&rft.volume=56&rft.genre=article