?url_ver=Z39.88-2004&rft_id=10.1016%2FS0010-4655(99)00338-0&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Chessa%2C+Alessandro&rft.aufirst=Alessandro&rft.aulast=Chessa&rft.issn=0010-4655&rft.date=1999&rft.title=Computer+Physics+Communications&rft.atitle=Critical+exponents+in+stochastic+sandpile+models+&rft.issue=0&rft.pages=299+-+302&rft.volume=121%E2%80%9312&rft.genre=article