Authors: Zain-Ahmed, A Sopian, K Abidin, ZZ Othman, MYH

Citation: A. Zain-ahmed et al., The availability of daylight from tropical skies - a case study of Malaysia, RENEW ENERG, 25(1), 2002, pp. 21-30

Authors: Sopian, K Liu, HT Kakac, S Veziroglu, TN

Citation: K. Sopian et al., Performance of a double pass photovoltaic thermal solar collector suitablefor solar drying systems, ENERG CONV, 41(4), 2000, pp. 353-365

Authors: Sopian, K",Supranto,"Daud, WRW Othman, MY Yatim, B

Citation: Wrw. Sopian, K",supranto,"daud et al., Thermal performance of the double-pass solar collector with and without porous media, RENEW ENERG, 18(4), 1999, pp. 557-564