?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Voice%2C+Thomas&rft.aulast=Voice&rft.aufirst=Thomas&rft.date=2012&rft.atitle=On+coalition+formation+with+sparse+synergies&rft.title=Proc.+11th+Int.+Conference+on+Autonomous+Agents+and+Multi-Agent+Systems&rft.genre=article