| [ref.53] | Hagen, C. A.; Hawrylewicz, E. J.; and Ehrlich, R.: Survival of Microorganisms in a Simulated Martian Environment. Appl. Microbiol., vol. 12, 1964, pp. 215-218. |
| [ref.54] | Hawrylewicz, E. J.; Hagen, C. A.; and Ehrlich, R.: Response of Microorganisms to a Simulated Martian Environment. In Life Sciences and Space Research III, M. Florkin, ed., North-Holland Publ. Co. (Amsterdam), 1965. |
| [ref.55] | Nicks, O. W.; and Reynolds, O. E.: Decontamination and Sterilization of Lunar and Planetary Spacecraft. Science, vol. 142, 1963, pp. 539-540. |
| [ref.56] | Phillips, C. R.; and Hoffman, R. K.: Sterilization of Interplanetary Vehicles. Science, vol. 132, 1960, pp. 991-995. |
| [ref.57] | Hobby, G.: Review of NASA-JPL Spacecraft Sterilization Program. A Review of Space Research. Natl. Acad. Sci.-Nat. Res. Council, Publ. 1079, 1962, ch. 10. App. III. |
| [ref.58] | Bruch, C. W.; Koesterer, M. G.; and Bruch, M. K.: Dry-Heat Sterilization: Its Development and Application to Components of Exobiological Space Probes. Develop. Ind. Microbiol., vol. 4, 1963, pp. 334-342. |
| [ref.59] | Koesterer, M. G.: Thermal Death Studies on Microbial Spores and Some Considerations for the Sterilization of Spacecraft Components. Develop. Ind. Microbiol., vol. 6, 1964, pp. 268-276. |
| [ref.60] | ([1], [2], [3]) Hall, L. B.; and Bruch, C. W.: Procedures Necessary for the Prevention of Planetary Contamination. In Life Sciences and Space Research III, M. Florkin, ed., North-Holland Publ. Co. (Amsterdam), 1965. |
| [ref.61] | Portner, D. M.; Hoffman, R. K.; Decker, H. M.; and Phillips, C. R.: The Level of Microbial Contamination in a Clean Room During a One-Year Period. Rept. 11-65 on NASA Interagency Agreement R-35, 1964. |
| [ref.62] | Bruch, C. W.: Some Biological and Physical Factors in Dry-Heat Sterilization: A General Review. In Life Sciences and Space Research II. M. Florkin and A. Dollfus, eds., North-Holland Publ. Co. (Amsterdam), 1964. |