1. Ader, R. (1975). Early experience and hormones: Emotional behavior and adrenocortical function. In B. E. ELEFTHERIOU and R. SPROTT (Eds.), Hormonal correlates of behavior. New York: Plenum Press, pp. 7–33.
2. Ader, R. (1981). Psychoneuroimmunology. New York: Academic Press.
3. Akil, H., Mayer, D. J., and Liebeskind, J. C. (1972). Comparaison chez le rat entre l’analgésie induite par stimulation de la substance grise péri-aqueducale et l’analgésie morphinique. Comptes Rendus de l’Académie des Sciences (Paris), 274, 3603–3605.
4. Akil, H., Madden, J., Patrick, R. L., and Barchas, J. D. (1976a). Stress-induced increase in ‘endogenous opiate peptides; concurrent analgesia and its partial reversal by naloxone. In H. W. KOSTERLITZ (Ed.), Opiates and endogenous opioid peptides. Amsterdam: Elsevier, pp. 63–70.
5. Akil, H., Mayer, D. J., and Liebeskind, J. C. (1976b). Antagonism of stimulation-produced analgesia by naloxone, a narcotic antagonist. Science, 191 961–962.