1. Absorption Heat Pumps and Working Pair Developments in Europe until 1974, New working pairs for absorption processes;Stephan,1982
2. Sorptionskältmaschinen;Niebergall,1959
3. The Potential for Solar Assisted Cooling in Southern European Countries;Commission of the European Communities DG XII;RENA-CT94-0017,1995
4. Absorption cycles. A review with regard to energetic efficiency;Ziegler;Heat Recovery Systems and CHP,1993
5. Performance assessment of multistage absorption cycles;Cheung;International J. Refrigeration,1996