(f) Carry out all other functions assigned thereto by the Assembly or the Council. Article 17 Meetings 1. The Commission shall meet at least once a year in Ordinary Session. It may be convened in extraordinary Session either on its own initiative or at the request of the Assembly or the Council. 2. The Ordinary Session of the Commission shall be held immediately before the Ordinary Session of the Council preceding the Session of the Assembly and at the same venue of such Session. 3. The Commission shall prepare and adopt its rules of procedure. Article 18 Court of Justice Constitution and Functions 1. A Court of Justice of the Community is hereby constituted. 2. The Court of Justice shall ensure the adherence to law in the interpretation and application of this Treaty and shall decide on disputes submitted thereto pursuant to this Treaty 3. To this end, it shall: (a) Decide on actions brought by a Member State or the Assembly on grounds of the violation of the provisions of this Treaty, or of a decision or a regulation or on grounds of lack of competence or abuse of powers by an organ, an authority or a Member State; and (b) At the request of the Assembly or Council, give advisory opinion. 4. The Assembly may confer on the Court of Justice the power to assume jurisdiction by virtue of this Treaty over any dispute other than those referred to in paragraph 3(a) of this Article. 5. The Court of Justice shall carry out the functions assigned to it independently of the Member States and the other organs of the Community. Article 19 18