1. R. R. Carney, in: Advances in Cryogenic Engineering, Vol. 9, Plenum Press, New York (1964), p. 529.
2. R. R. Carney, R. F. Dwyer, H. M. Long., and L. R. Niendorf, “Theoretical Experimental, and Analytical Examination of Sub-Cooled and Solid Hydrogen,” Final Report on Air Force Contract AF33(657)-10248, Union Carbide Corp., Linde Division, Tech. and Documentary Rept. APL-TDR-64–22, Wright-Patterson Air Force Base, Ohio (May 1964).
3. C. W. Elrodj, “Hydrogen Subcooling For Aerospace Vehicles,” Paper presented at International Conference and Exhibit on Aerospace Support, Washington, D.C. (August 4–9, 1963).
4. C. W. Elrodj Aero-Propulsion Lab., Research and Technology Division, Air Force Systems Command, Wright-Patterson Air Force Base, Ohio, private communication.
5. R. F. Dwyer and G. A. Cook, “Research on Rheologic and Thermodynamic Properties of Solid and Slush Hydrogen,” Final Report on Air Force Contract AP33(657)-11098, Union Carbide Corp., Linde Division, Tonawanda, New York (1965).