1. Cost of house heating with solar energy;Löf;Solar Energy,1973
2. Compression refrigeration from a solar-powered organic Rankine-cycle engine;Sargent,1973
3. Design and feasibility of flat-plate solar collectors to operate at 100–150°C;Blum,1973
4. The performance of flat-plate solar heat collectors;Hottel;Trans. A.S.M.E.,1942
5. Evaluation of flat-plate solar collector performance;Hottel,1955