(2) The Tribunal may, if it deems it necessary at any stage of the proceeding:

(a) call upon the parties to produce documents, witnesses and experts; and

(b) visit any place connected with the dispute or conduct inquiries there.

(3) The parties shall cooperate with the Tribunal in the production of the evidence and in the other measures provided for in paragraph (2). The Tribunal shall take formal note of the failure of a party to comply with its obligations under this paragraph and of any reasons given for such failure.

(4) Expenses incurred in producing evidence and in taking other measures in accordance with paragraph (2) shall be deemed to constitute part of the expenses incurred by the parties within the meaning of Article 61(2) of the Convention.

Rule 35
Examination of Witnesses and Experts

(1) Witnesses and experts shall be examined before the Tribunal by the parties under the control of its President. Questions may also be put to them by any member of the Tribunal.

(2) Each witness shall make the following declaration before giving his evidence:

(3) Each expert shall make the following declaration before making his statement:

Rule 36
Witnesses and Experts: Special Rules

Notwithstanding Rule 35 the Tribunal may:

(a) admit evidence given by a witness or expert in a written deposition; and

(b) with the consent of both parties, arrange for the examination of a witness or expert otherwise than before the Tribunal itself. The Tribunal shall define the subject of the

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