< Decision III/17: Amendment of the Vienna Convention Up one level Decision III/19: Financial mechanism > Decision III/18: Fourth Meeting of the Parties to the Montreal Protocol The Third Meeting of the Parties decided in Dec. III/18 to convene the Fourth Meeting of the Parties to the Montreal Protocol in September or October 1992 in Denmark. < Decision III/17: Amendment of the Vienna Convention Up one level Decision III/19: Financial mechanism >