1. Ge Xin-shi , Gong Bao , and Yu Shan-qing , The spectral selective absorbing coating in Solar Energy application . ( Beijing ) Science Publishing House ( 1980 ) .
2. O. P. Agihotri and B. K. Gupta , Solar selective surfaces ( 1981 ).
3. C. G. Grangvist , A. Andersson and O. Huncleri , Sun II, proceedings of the International Solar Energy Society , Silver Jubilee Congress , Vol. 3 , 1955 ( 1979 ).