1. Sensory, motivational, and central control determinants of pain;Melzack,1968
2. Psychophysiology of pain;Melzack,1975
3. Opiate receptors and internal opiates;Snyder;Scient. Amer.,1977
4. Psychogenic regional pain alias hysterical pain;Walters;Brain,1961
5. Pain Control in Dentistry;Seltzer,1978