The Vienna Convention for the Protection of the Ozone Layer Preamble Article 1: Definitions Article 2: General obligations Article 3: Research and systematic observations Article 4: Co-operation in the legal, scientific and technical fields Article 5: Transmission of information Article 6: Conference of the Parties Article 7: Secretariat Article 8: Adoption of protocols Article 9: Amendment of the Convention or protocols Article 10: Adoption and amendment of annexes Article 11: Settlement of disputes Article 12: Signature Article 13: Ratification, acceptance or approval Article 14: Accession Article 15: Right to vote Article 16: Relationship between the Convention and its protocols Article 17: Entry into force Article 18: Reservations Article 19: Withdrawal Article 20: Depositary Article 21: Authentic texts Annex I: Research and systematic observations Annex II: Information exchange Declarations made at the time of adoption of the Final Act of the Conference of Plenipotentiaries on the Protection of the Ozone Layer