1. TRNSYS, a transient simulation program,1978
2. Design and economics of solar energy heat pump systems;Jordan;ASME Journal Section, Heating, Piping, and Air Cond.,1954
3. Utilization of solar energy for house heating;Jordan;ASME Journal Section, Heating, Piping and Air Cond.,1954
4. Solar energy availability for heating in the United States;Jordan;ASME Journal Section, Heating Piping, and Air Cond.,1959
5. Possibilities of a combination solar-heat pump unit;Löf;Edison Elect. Inst. Bull.,1956