Zieglgänsberger, W. Max Planck Institute of Psychiatry, Max Planck Society;
Zieglgänsberger, W., Tölle, T. R., Zimprich, A., Höllt, V., & Spanagel, R. (1995). Endorphins, pain relief and euphoria. In B. Bromm, & J. Desmedt (Eds.), Pain and the Brain. From Nociception to Cognition (pp. 439-458). New York: Raven Press.