1. Utilization of solar energy for house heating;Jordan;ASHVE J.,1954
2. Design and economics of solar energy heat pump systems;Jordan;ASHVE J.,1954
3. Possibilities of a combination solar-heat pump unit;Löf,1956
4. The place of the heat pump and solar energy in space condition;Jordan,1957
5. Solar heating and cooling of buildings, phase O feasibility and planning study;General Electric;Final Rep.,1974