?url_ver=Z39.88-2004&rft_id=doi%3A10.1016%2Fj.artint.2012.03.007&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Rahwan%2C+Talal&rft.aulast=Rahwan&rft.aufirst=Talal&rft.volume=186&rft.date=2012&rft.issn=00043702&rft.atitle=Anytime+coalition+structure+generation+in+multi-agent+systems+with+positive+or+negative+externalities&rft.title=Artificial+Intelligence&rft.pages=95-122&rft.genre=article