1. Energy and Global Warming Impacts of CFC Alternative Technologies;Fischer,1991
2. Refrigeration in IPCC/TEAP Special Report Safeguarding the Ozone Layer and the Global Climate System: Issues Related to Hydrofluorocarbons and Perfluorocarbons;Devotta,2007
3. The next generation of refrigerants – historical review, considerations, and outlook;Calm;International Journal of Refrigeration,2008
4. N. Burhenne, M. Chasserot, Natural refrigerants in teh HVAC&R industry - a study of global market and policy trends, 23rd IIR International Congress of Refrigeration. August 2011, Prague, Czech Republic.
5. H. Kruse, Commercial Refrigeration – on the Way to Sustainability. IIR International Conference on Commercial Refrigeration, Vicenza, Italy, 2005.