3. Forms de Arbitration
The investor and the Contracting Party concerned in the dispute may agree to refer the dispute either to: a) ICSID, provided that the Contracting Parties are party to the ICSID Convention, and to the Additional Facility of the Center; b) an international arbitrator or ad hoc arbitration tribunal appointed by a special agreement or established under the UNCITRAL Arbitration Rules. If after a period of three months an agreement has not been reached on the procedure, the parties shall be bound to submit it to arbitration under the UNCITRAL Arbitration Rules. (Article X (3)).
4. Applicable Law
The arbitral tribunal shall decide the dispute in accordance with the provisions of the Agreement; with reference to the laws of the Contracting Party involved in the dispute; terms of any specific agreement concluded in relation to such an investment; and, principles of international law. (Article X(4)). Argentina/Chile