J. Belman-Flores, V. Pérez-García, J. F. Ituna-Yudonago, J. L. Rodríguez-Muñoz, and J. de J. Ramírez-Minguela, “General aspects of carbon dioxide as a refrigerant”, J. energy South. Afr., vol. 25, no. 2, pp. 96–106, Jun. 2014, doi: 10.17159/2413-3051/2014/v25i2a2675.