1. Solar energy collection with evacuated tubes;Speyer;ASME Paper No. 64-WA/Sol, J. Engng Power,1964
2. Solar Energy Thermal Processes;Duffie,1974
3. Cooling subsystem design in CSU solar house III;Ward,1975
4. Simulation and design of evacuated tubular solar residential air conditioning systems and comparison with actual performance;Duff,1978