?url_ver=Z39.88-2004&rft_id=10.1109%2FMCDM.2009.4938838&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Utomo&rft.au=Utomo%2C+C.&rft.aufirst=C.&rft.date=2009&rft.isbn=9781424427642&rft.title=Aggregation+and+coalition+formation+on+value-based+decision&rft.genre=proceeding