1. ( 2002). Anxiety and its disorders: The nature and treatment of anxiety and panic (2nd ed.). New York: Guilford.
2. ( 1999). Cognitive behavior therapy and systemic behavioral psychotherapy. In (Ed.), Harvard guide to psychiatry (3rd ed.). Cambridge, MA: Harvard University Press.
3. Role of the Amygdala in Fear Extinction Measured with Potentiated Startle
4. ( 2003b, November). The role of NMDA receptors in extinction. Paper presented at the annual meeting of the Society for Neuroscience, New Orleans.