1. Self regulating solar water heaters with a very short start up phase;Boettcher,1982
2. Solar Thermal Processes;Duffie,1974
3. Plastic solar air heater of a novel design—Testing and performance, JUL 1783;Bansal,1982
4. R. L. Sawhney and N. K. Bansal, Microprocessor aided data acquisition and processing for solar thermal systems (Communication).