1. The occurrence of sleep-disordered breathing among middle-aged adults;Young;N. Engl. J. Med.,1993
2. Messungen zur Festigkeit des Schlafes;Kohlschuetter;Z Rat Med.,1863
3. The Philosophy of Sleep;MacNish,1830
4. Sleep theories in the antiquity and in the Renaissance;Wittern,1989
5. The Physiology of Sleep;Durham,1860