?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Punta&rft.aufirst=Davide&rft.au=Punta%2C+Davide&rft.date=2013&rft.title=Evaluation+of+individual+contributions+in+a+group+estimate+of+the+position+of+a+moving+point+of+common+interest&rft.genre=proceeding