Article 19
1. Each party shall have the burden of proving the facts relied on to support its claim or defense.
2. The tribunal may order a party to deliver to the tribunal and to the other parties a summary of the documents and other evidence which that party intends to present in support of its claim, counterclaim or defense.
3. At any time during the proceedings, the tribunal may order parties to produce other documents, exhibits or other evidence it deems necessary or appropriate.
[...]
(a)
(b)
(c)
(d)