1. Solar Water Distillation, the Roof Type Still and a Multiple Effect Diffusion Still;Dunkle,1961
2. Glass Engineering Handbook;Shand,1958
3. Solar Energy Collection and Its Utilization for House Heating;Whillier,1953
4. Solar Water Heaters;Andrassy,1961
5. Ashrae, Guide and Data Book, Fundamentals and Equipment,1961