procédure de preuve (F) = Beweisverfahren (D) = desahogo de pruebas, procedimento de pruebas (Esp.) : the procedure of administering proof or evidence. Usually documents are produced together with the briefs. Witnesses are heard at a hearing. Party-appointed experts may prepare an expert's report and also be heard. An expert's report by a tribunal-appointed expert may be prepared. The arbitral tribunal may proceed with an inspection. At the close of a proof procedure the Parties usually comment on the evidence, by oral summation or post-hearing briefs. See Art. 3 to 8 IBA Rules of Evidence