1. Rai, G.D., Solar Energy Utilization, New Delhi: Khanna Publ., 1994, nos. 1–3.
2. Hayati, O. and Rzayer, P., Int. J. Globe Energy, 2002, vol. 17, no. 1, pp. 106–112.
3. Desai, S.R., Kumar, V., and Guruswamy, T.J., Agril. Engg., 2002, vol. 26, nos. 3–4, pp. 30–37.
4. Hachemi, A.C., Abed, B., and Asnoun, A., Renew. Energy, 1998, vol. 13, no. 4, pp. 439–451.
5. Sharma, V.K., Colangelo, A., and Spagna, G., Renew. Energy, 1994, vol. 6, no. 4, pp. 413–423.