ই-মেইল নথি: Re: Norman AB, Tabet MR, Norman MK, and Tsibulsky VL (2014) Maintained Cocaine Self-Administration Is Determined by Quantal Responses: Implications for the Measurement of Antagonist Potency. J Pharmacol Exp Ther 348:311–315; doi:10.1124/jpet.113.210690