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2. J.A. Jamieson, R.H. McFee, G.N. Plass, R.H. Grube, and R.G. Richards, Infrared Physics and Engineering, McGraw-Hill, 1963.
3. T.P. Merritt and F.F. Hall, Jr., “Blackbody Radiation”, Proc. IRE, 47, pp 1435–1441, September 1959.
4. R.C. Jones, “Terminology in Photometry and Radiometry”, JOSA, 53, pp 1314–1315, November 1963.
5. R.D. Hudson, Jr., Infrared System Engineering, Wiley-Interscience, 1969.