1. Kruse H. The state of the art of the hydrocarbon technology in household refrigeration. In: Proc. of the int. conferences on ozone protection technologies. Washington (DC): 1996. p. 179–88.
2. Testing of propane/isobutane mixture in domestic refrigerators;Jung;Int J Refrigeration,2000
3. Devotta S, Patil SR, Sawant NN, Kulkarni MM. Comparative life cycle testing of hermetic compressors with CFC-12 and HC-blend. In: Proc. of the int. conferences on ozone protection technologies. Washington (DC): 1997. p. 194–202.
4. Fine A. Field testing of CFC-free, energy efficient refrigerators in China. In: Proc. of the int. conferences on ozone protection technologies. Washington (DC): 1997. p.203–12.
5. Int. Energy Agency's Heat Pump Center. Informative fact sheet: hydrocarbons as refrigerants in residential heat pumps and air-conditioners, 2002.