1. Rules for the design of multi-stage absorption and compression heat pumps (in German);Alefeld;Brennstoff-Warme-Kraft,1982
2. Multi-stage apparatus having working fluid and absorption cycles and methods of operation thereof;Alefeld,1985
3. An example of the manipulation of effective vapor pressure curves by thermodynamics cycles;Radermacher;Trans ASME; J Eng Gas Turb Power,1988
4. Advanced versions of heat pumps with zeotropic refrigerant mixtures;Radermacher;ASHRAE Trans,1986
5. Calculation of the performance of vapor compression heat pumps with solution circuits using the mixture R22-DEGDME;Pourreza-Djourshari;Int J Refrig,1986