1. Barriault, R. J. et al, Thermodynamics of Certain Refractory Compounds, 2 Vols., ASD TR 61–260, Pt. I (May 1962).
2. Barriault, R. J. et al, ASD TR 61–260, Pt. I, Vol. 1 (May 1962), p. 1–22.
3. Fundamental Constants of Physics;Cohen,1957
4. The general physical constants: As of august 1941 with details on the velocity of light only
5. Report on Atomic Weights for 1956-1957