1. Williams, R. L., Karacan, I., and Hursch, C. J., in: Electroencephalography (EEG) of human sleep: Clinical applications, p. 169. Wiley & Sons, New York 1974.
2. Miles, L. E., and Dement, W. C., Sleep3 (1980) 119.
3. Gaillard, J.-M., and Tissot, R., Comp. biomed. Res.6 (1973) 1.
4. Gaillard, J.-M., Encéphale5 (1979) 71.
5. Gaillard, J.-M., Sleep1 (1978) 133.