1. Recent investigations in the use of solar energy for cooking;Löf;Solar Energy,1963
2. ASHRAE 93-77 (ANSI B1981-1977) Methods of testing to determine the thermal performance of solar collectors (1977).
3. Outdoor testing of a seasonally adjusted solar concentrator;Mullick,1980
4. Investigations and testing procedure of box type solar cooker;Saxena;M. Tech thesis, Centre of Energy Studies, I.I.T. Delhi,1984