?url_ver=Z39.88-2004&rft_id=10.1103%2FPhysRevE.55.R4865&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Guido&rft.aulast=Caldarelli&rft.au=Caldarelli%2C+Guido&rft.volume=55&rft.issue=5&rft.pages=R4865-R4868&rft.title=Physical+Review+E&rft.atitle=Randomly+pinned+landscape+evolution&rft.date=1997&rft.issn=1539-3755&rft.genre=article