35. Each party may, by way of summons, summon his witnesses himself or request a judge or a clerk of the court of competent jurisdiction in the judicial district where the witness is to be heard to make the summons.
A summons requires the witness designated therein by name to attend at the date, time and place indicated to testify and, where such is the case, to bring with him anything mentioned that is relevant to the issue and in his possession or under his control.