1. “Liquid Propellant Losses During Space Flight,” Final Report on Contract No. NAS2–615, Report No, 65008–00-04, Arthur D. Little, Inc. (October 1964).
2. J. F. Haskins, M. D. Campbell, J. Hertz, and J. L. Percy, “Thermophysical Properties of Plastic Materials and Composites to Liquid Hydrogen Temperature (—423°F),” Contract No. AF33-(657)-9160, Report No. ML-TDR-64–33, Part 1 (June 1964).
3. “Propellant Storability in Space,” Report No. RPL-TDR-64–75, General Electric Spacecraft Dept. (June 1965).
4. L. W. Toth, T. J. Boiler, A. H. Kariotis, and F. D. Yoder, “Program for the Evaluation of Structural Reinforced Plastic Materials at Cryogenic Temperatures,” Annual and Fourth Quarterly Report on Contract NAS 8–11070 (July 1964).
5. V. H. Gray and T. F. Gelder, in: Advances in Cryogenic Engineering, Vol. 5, Plenum Press, New York (1960), p. 131.