1. Emerging principles of the midbrain periaqueductal gray matter;Bandler,1991
2. Midbrain gray control of defensive behavior in the cat and the rat;Bandler,1991
3. Analgesia produced by stimulation of the periaqueductal gray matter: true antinoceptive effects versus stress effects;Besson,1991
4. Biochemistry and modulation of nociception and pain;Bonica,1990
5. Character of terminal illness in the advanced cancer patient: pain and other symptoms in the last four weeks of life;Coyle;J. Pain Sympt. Manag.,1990