W. Fratta

Lack of morphine-induced dopamine release in the nucleus accumbens of cannabinoid CB(1) receptor knockout mice.

M. Parmentier, A. Imperato, C. Ledent, 1999, European journal of pharmacology.

Cannabinoid-opioid interactions in drug discrimination and self-administration: effect of maternal, postnatal, adolescent and adult exposure to the drugs.

W. Fratta, L. Fattore, P. Fadda, 2010, Current drug targets.

Self-administration of the cannabinoid receptor agonist WIN 55,212-2 in drug-naive mice

G. Gessa, G. Cossu, W. Fratta, 1998, Neuroscience.

Drug‐ and cue‐induced reinstatement of cannabinoid‐seeking behaviour in male and female rats: influence of ovarian hormones

L. Fattore, P. Fadda, S. Altea, 2010, British journal of pharmacology.

Crucial Role of α4 and α6 Nicotinic Acetylcholine Receptor Subunits from Ventral Tegmental Area in Systemic Nicotine Self-Administration

J. Changeux, U. Maskos, S. Tolu, 2008, The Journal of Neuroscience.