1. Report of the Technology and Economic Assessment Panel;UNEP,1991
2. Report of the Refrigeration, Air Conditioning and Heat Pumps Technical Options Committee;UNEP,1991
3. Report of the Fourth Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer;UNEP,1992
4. International response to the depletion of the ozone layer;El-Arini,1992
5. Refrigeration: solutions with HFC134a?;Kuijpers,1991