Article 11
Paragraph 1 By way of derogation from Article 10, the parties may specify by special agreement that their dispute shall be submitted for decision either to one sole arbitrator chosen ad personam (the Chairman of the Committee, a Vice-Chairman or another member) or to an arbitration board consisting, in addition to its Chairman, of four members, each of the parties nominating two members. Paragraph 2 The special agreement on arbitration shall specify the subjects in dispute, list the questions on which the arbitrators will have to adjudicate, and state the basis used by the parties in deciding the composition of the arbitration board.