CHAPTER IV: OTHER FORMS OF COOPERATION
SECTION I: CONDITIONS
Art. 30 Forms of cooperation
Cooperation according to this chapter may include any procedural acts not prohibited by Swiss law that facilitate the investigation and prosecution of crimes within the jurisdiction of the Court or that serve to produce the proceeds of such crimes, in particular:
b. the taking of evidence, including testimony under oath, and the production of evidence,
including expert opinions and reports necessary to the Court
Taking of evidence - national procedures for ICC proceedings
Production of evidence - national procedures for ICC proceedings
EDIT.