1. United Nations Environmental Programme, Montreal protocol on substances that deplete the ozone layer, Final Act, New York, United Nations, 1987.
2. Theoretical analysis of replacement refrigerants for R22 for residential uses;Radermacher;ASHRAE Transactions,1993
3. Working fluids for mechanical refrigeration;Cavallini;International Journal of Refrigeration,1996
4. Performance of HCFC22 alternative refrigerants;Jung;International Journal of Refrigeration,2000
5. R-22 replacement status;Calm;ASHRAE Journal,2004