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2. W. F. Bogaerts and C. M. Lampert, ibid. 18 (1983) 2847.
3. O. P. Agnihotri and B. K. Gupta, ?Solar Selective Surfaces? (Wiley, New York, 1981).
4. S.A. Herzenberg and R. Silberglitt in Proc. Society of Photo Optical Instrumentation Engineers, 324 (International Society for Optical Engineering, Bellingham, Washington, 1982) 92.
5. C. M. Lampert, in ?Advances in Solar Energy?, Vol. 5, edited by K. W. Boer (Plenum Press, 1989).