?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Mazzara%2C+Manuel&rft.aulast=Mazzara&rft.aufirst=Manuel&rft.date=2011&rft.title=Polidoxa%3A+a+Sinergic+Approach+of+a+Social+Network+and+a+Search+Engine+to+Offer+Trustworthy+News&rft.genre=proceeding