The referees incur in violation of the principle of the contradictory if they have declared decay one part for the late exercise of the faculties of propose questions and instances preliminary investigations, i.e. produce documents, if the chances decli nare such peremptory (not it was foreseen from the convention of arbitration, or a act deed written separate or by the regulation procedural by the same prepared, and in absence specification warning at regard at moment of the assignment of the terms.