Article 20
Applicable law

(1) The Arbitrator shall decide the merits of the dispute on the basis of the law or rules of law agreed by the parties. In the absence of such an agreement, the Arbitrator shall apply the law or rules of law which the Arbitrator considers to be most appropriate.

(2) Any designation made by the parties of the law of given state shall be construed as directly referring to the substantive law of that state and not to its conflict of law rules.

(3) The Arbitrator shall decide the dispute ex aequo et bono or as amiable compositeur only if the parties have expressly authorized the Arbitrator to do so.

Article 21
Oral Hearing

An oral hearing shall be arranged only if requested by either party and if the Arbitrator deems it necessary. If a hearing is held the Arbitrator, taking into account the wishes of the parties, shall determine the time for the hearing, its duration and how is to be organised, including the manner in which evidence is to be presented.