Subject to this agreement and the Terms of Reference, the arbitrators shall adopt those procedural and evidentiary rules that they deem necessary to answer the questions set out in the Terms of Reference. They will have access to all information necessary to decide the issues submitted to arbitration, including confidential information. Unless the competent authorities agree otherwise, any information that was not available to both competent authorities before the request for arbitration was received by both of them shall not be taken into account for purposes of the decision.
