Part IV
Procedural and final clauses
Article 20: Validity of the Annexes
Article 21: Existing and supplementary agreements
Article 22: Conference of the Parties
Article 23: Amendments to the Convention
Article 24: Settlement of disputes
Article 25: Signature
Article 26: Ratification, acceptance or approval
Article 27: Entry into force
Article 28: Accession, participation
Article 29: Withdrawal
Article 30: Functions of the Depositary
Article 31: Authentic texts, Depositary