1. Absorptionskältemaschinen;Altenkirch,1954
2. Candidate chemical systems for air cooled, solar powered, absorption air conditioner design, part II — solid absorbents, high latent heat refrigerants;Biermann,1978
3. Thermodynamics;Guggenheim,1967
4. Development of an absorption heat pump of improved COP;Kinsella,1979