2 Experts may testify as witnesses under oath, in accordance with the provisions of the Rules of Procedure of the Court. 3. All hearings shall be recorded and signed by the President and the Chief Registrar of the Court. Article 18: Deposition Upon Request 1. The Court may request the judicial authority of his place of residence to hear the evidence of a witness or an expert. 2. Such a request shall be made to the judicial authority in accordance with the conditions stipulated in the Rules of Procedure of the Court. Documents emanating from such hearing shall be transmitted to the Court under the same conditions. 3. Expenses incurred by this procedure shall be borne by the parties to the dispute. Article 19: Decisions of the Court 1. The Court shall examine the dispute before it in accordance with the provisions of the Treaty and its Rules of Procedure. It shall also apply, as necessary, the body of laws as contained in Article 38 of the Statutes of the International Court of Justice. 2. Decisions of the Court shall be read in open court and shall state the reasons on which they are based. Subject to the provisions on review contained in this Protocol, such decisions shall be final and immediately enforceable. 3. The Court shall give only one decision in respect of each dispute brought before it. Its deliberations shall be secret and its decisions shall be taken by a majority of the members. Article 20: Provisional Measures and Instructions The Court, each time a case is brought before it, may order any provisional measures or issue any provisional instructions which it may consider necessary or desirable. Article 21: Application for Intervention Should a Member State consider that it has an interest that may be affected by the subject matter of a dispute before the Court, it may submit by way of a written application a request to be permitted to intervene. Article 22: Exclusivity of Competence and Recognition of the Decisions of the Court 1. No dispute regarding or application of the provisions of the Treaty may be referred to any other form of settlement except that which is provided for by the Treaty or this Protocol. . 2 When a dispute is brought before the Court, Member States or Institutions of the Community shall refrain from any action likely to aggravate or militate against its settlement.