The clause compromise contained in the contract of contract radical the competence referee also with about at controversies for works extra-contract, as tratt ASI of works which however they draw title in the same source negotiation and kept account of the will of the parts of to refer to referees all the disputes relative a The execution and to the interpretation of the contract of contract. in fact, the parts that have chosen the arbitration with reference to quarrels future that derive from the contract, they have done this with reference a all the quarrels which are they reconnect to the contract, between which those related to the fee for works additional performed by the Contractor.