1. J. T. Gier, R V. Dunkle, and J. T. Bevans. J. Opt. Soc. Am. 44:558.
2. W. L. Starr, and E. Streed J. Opt. Soc. Am. 45:584.
3. R. J. Hembach, L. Hemmerdinger, and A. J. Katz, in “Measurement of Thermal Radiation Properties of Solids” (J. C. Richmond, ed.) pp. 153–167, Ofc. Sci. Techn. Inf., NASA SP-31, 1963.
4. E. R. Streed, L. A. McKellar, R. Rolling, Jr., and C.A.Smith, in “Measurement of Thermal Radiation Properties of Solids” (J. C. Richmond, ed.) pp. 237–252 Ofc. Sci. & Techn. Inf., NASA SP-31, 1963.
5. Anon. NBS Technical News Bulletin, 1963:185.