The p.a. cannot use per the resolution of the disputes deriving from contracts conclusions with private of the instrument of the cd. Arbitration irreplace or free since, in such a way, the composition of the dispute would come to to be to subjects (the referees . ltre ad being identified in defect of any procedure legally de-term e, therefore, therefore, without adequate guarantees transparency and advertising of the choice, they would also be intended ad operate according to mode mode not predefined and not accompanied by the guarantees.