Who wrote the Montreal protocol?

The Montreal Protocol, an international treaty aimed at phasing out substances that deplete the ozone layer, was negotiated by representatives from various countries rather than a single author. It was adopted on September 16, 1987, during a meeting of the United Nations in Montreal, Canada. Key figures in the negotiation included Canadian Environment Minister Jean Charest and U.S. Environmental Protection Agency Administrator Lee Thomas. The protocol has since been amended and adjusted to enhance its effectiveness.