1. Wienbolt HW, Augenstein CD. Visco-heater for low consumption vehicles. SAE Technical Papers, Paper no. 2003-01-0738. Society of Automotive Engineers, 2003.
2. Hammer H, Wertenbach J. Carbon dioxide (R744) as supplementary heating device. SAE Automotive Alternate Refrigerants Symposium, Scottsdale, Arizona, USA, 2000.
3. Meyer J, Yang G, Papoulis E. R134a heat pump for improved passenger comfort. SAE Technical Papers, Paper no. 2004-01-1379. Society of Automotive Engineers, 2004.
4. Evaluation of supplementary/retrofit refrigerants for automobile air-conditioners charged with CFC12;Jung;Int J Refrig,1999
5. Performance analysis and simulation of automobile air conditioning system;Lee;Int J Refrig,2000