1. All-Union State Standard 8.196-81: The State System of Measurements: The State Primary Standard and State Test Scheme for Means of Measuring Energy-Brightness Spectral Density, Radiation-Strength Spectral Density, and Energy Illumination Spectral Density for Continuous Optical Radiation in the Wavelength Range 0.22?10.6 ?m [in Russian].
2. All-Union State Standard 8.195-81: The State System of Measurements: The State Special Standard and State Test Scheme for Means of Measuring Radiation Strength and Energy Intensity for Continuous Optical Radiation with a Continuous Spectrum in the Wavelength Range 0.2?10.6 ?m [in Russian].
3. R. B. Kotel'nikov et al. Particularly Refractory Elements and Compounds [in Russian], Metallurgiya, Moscow (1969).
4. A. E. Sheindlin (editor), Emissivities of Solid Materials [in Russian], Énergiya, Leningrad (1974).
5. G. I. Babayants et al., in: Problems in Energy Photometry [in Russian], Atomizdat, Moscow (1979).