?url_ver=Z39.88-2004&rft_id=10.1080%2F13642819908223080&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Caldarelli%2C+Guido&rft.aufirst=Guido&rft.aulast=Caldarelli&rft.atitle=Critical+behaviour+in+the+fracture+of+disordered+media&rft.title=Philosophical+Magazine+Part+B&rft.date=1999&rft.volume=79&rft.issue=11-12&rft.pages=1939-1944&rft.issn=1364-2812&rft.genre=article