1. NASA Technical Memorandum, NASA TM X-58067;NA Kanas,1971
2. Pope, F. E., & Rogers, T. A. (1968). Some psychiatric aspects of an Arctic survival experiment. Journal of Nervous and Mental Disease, 146, 433–445.
3. Smith, W. M. (1966). Observations over the lifetime of a small isolated group. Psychological Reports, 19, 475–514.
4. Weybrew, B. B. (1957, February 18). Psychological and psychophysiological effects of long periods of submergence. Analysis of data collected during a 265-hour, completely submerged, habitability cruise made by the U.S.S. Nautilus (Naval Medical Research Laboratory Report No. 281).
5. Kinsey, J. L. (1959). Psychological aspects of the “Nautilus” transpolar cruise. U.S. Armed Forces Medical Journal, 10, 451–462.