?url_ver=Z39.88-2004&rft_id=10.1109%2FWI-IAT.2009.346&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Boratto&rft.aufirst=Ludovico&rft.au=Boratto%2C+Ludovico&rft.isbn=978-1-4244-5331-3+&rft.date=2009&rft.title=Group+Recommendation+with+Automatic+Identification+of+Users+Communities&rft.btitle=Proceedings+of+the+IEEE%2FWIC%2FACM+International+Joint+Conferences+on+eb+Intelligence+and+Intelligent+Agent+Technologies%2C+2009.+WI-IAT+'09.&rft.genre=bookitem