1. Natural refrigerants for refrigeration and air conditioning systems;Saffa;Applied Thermal Engineering,1997
2. F.A.A. Clito, C.O. Armando, O Comportamento de Evaporadores e Condensadores de Instalações Frigoríficas Face aos Novos Fluidos Refrigerantes, in: Proceedings of the III Congresso de Engenharia Mecânica do Norte-Nordeste, Brazil, 1994.
3. Principles of Refrigeration;Gosney,1982
4. Services in processing plants: refrigeration;Armando,2002
5. Expansion devices;Fearon;Journal of Refrigeration and Air Conditioning,1979