G. F. Koob, «Addiction is a Reward Deficit and Stress Surfeit Disorder». Frontiers in Psychiatry 4 (Aug. 2013): 72.
611
T. S. Shippenberg, A. Zapata, and V. I. Chefer, «Dynorphin and the Pathophysiology of Drug Addiction». Pharmacology & Therapeutics 116, no. 2 (Nov. 2007): 306–321.