The clauses skills inserted in the constitutive acts, in the statutes or in the regulations of associations or federations not require a specific approval per i Written, Ai senses of art. 1341 Cod. civ., from the moment that the their efficacy does not descend from acceptance of conditions general contract predisposed unilateralm Authority from one of the contractors, ma by adhesion to the association, the which, assuming a commonality interest and of resources, aimed at achievement of the purposes provided for by the constitutive act, excludes the possibility to identify a contractor more weak, deserving of the particular protection insured by the aforementioned provision.