Complex interactions between nicotine and nonpharmacological stimuli reveal multiple roles for nicotine in reinforcement.
Chaudhri N, Caggiula AR, Donny EC, Palmatier MI, Liu X, Sved AF. Complex interactions between nicotine and nonpharmacological stimuli reveal multiple roles for nicotine in reinforcement. Psychopharmacology (Berl). 2006 Mar; 184(3-4):353-66.