1. Globus, G. G., Psychosom. Med., 31, 528 (1969); Globus, G. G., in Intern. Psychiat. Clin. (edit. by Hartmann, E.), 78 (Little, Brown, Boston, 1970).
2. Taub, J. M., and Berger, R. J., Psychon. Sci., 16, 204 (1969).
3. Wilkinson, R. T., Edwards, R. S., and Haines, E., Psychon. Sci., 5, 471 (1966).
4. Rechtschaffen, A. and Kales, A. (eds), A Manual of Standardized Terminology, Techniques and Scoring System for Sleep Stages of Human Subjects (US Government Printing Office, Washington, 1968).
5. Phoebus, E., Taub, J. M., Globus, G. G., and Drury, R., Percept. Motor Skills, 31, 526 (1970).