(1) Unless otherwise agreed by the parties, the arbitral tribunal may appoint one or several experts to report to it on specific issues to be determined by the arbitral tribunal. Furthermore, the arbitral tribunal may require a party to provide the expert with any relevant information, or to produce or to provide access to, for inspection by the expert, any and all of the documents or objects of relevance to the proceedings.
(2) Unless otherwise agreed by the parties, then on request by a party or if the arbitral tribunal considers this necessary, the expert is to participate in a hearing for oral argument after delivering the written or oral report. At the hearing, the parties have the opportunity to put questions to the expert and to present experts of their own to testify on the points at issue.
(3) Sections 1036, 1037 (1) and (2) apply accordingly to the experts appointed by the arbitral tribunal.