The referee+irrital+is+attributable+to the+scheme+of the mandate,+awarded+jointly+by+a+plurality+parts+a+one+or+more+referees+and+preordinate+at+stipulation+a+agreement+contractual Attura+of+transaction+e+therefore+a+it+not+si+applies+art.+1972+of the Italian Civil Code,+which marks+the+nullity+of the+transaction+which has+ad+object+a+contract+null+per+illegality+of the+cause+or+of the+reason+common+a both+parts.