HomeAntarctica Status Lists ...16. Recommendations adopted at the Eleventh Consultative Meeting, done at Buenos Aires June 23-July 7, 1981. hide 16. Recommendations adopted at the Eleventh Consultative Meeting, done at Buenos Aires June 23-July 7, 1981. Depositary – Treaty Affairs Office of Treaty Affairs Entered into force October 5, 1989 for XI-2 and XI-3, November 16, 1989 for XI-1. Article IX, paragraph 4, of the Antarctic Treaty provides that recommended measures “shall become effective when approved by all the Contracting Parties whose representatives were entitled to participate in the meetings held to consider those measures.” Download status lists [122 KB] Tags Antarctic Multilateral Treaties