PET imaging of dopamine D2 receptors during chronic cocaine self-administration in monkeys.
Nader MA, Morgan D, Gage HD, Nader SH, Calhoun TL, Buchheimer N, Ehrenkaufer R, Mach RH. PET imaging of dopamine D2 receptors during chronic cocaine self-administration in monkeys. Nat Neurosci. 2006 Aug; 9(8):1050-6.