1. Baek, J., Groll, E., Lawless, P., 2002. Effect of pressure ratio across compressors on the performance of the transcritical carbon dioxide cycle with two-stage compression and intercooling. In: Proc. 2002 9th Int. Refrigeration Conf. at Purdue, Purdue Univ., USA.
2. Bernabei, M., Cecchinato, L., Chiarello, M., Corradi, M., Fornasieri, E., 2008. Design and experimental analysis of a carbon dioxide transcritical chiller. In: Proceedings of the 8th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2008). September 7–10, Copenhagen, Denmark.
3. Prospects for the return of CO2 as a refrigerant;Cavallini,2001
4. Cecchinato, L., Corradi, M., Fornasieri, E., Zilio C., 2005. Thermodynamic analysis of different two-stage transcritical carbon dioxide cycles. In: Proc. IIR Int. Conf. on Thermophysical Properties and Transfer Processes of Refrigerants, Vicenza, Italy.