title: A second-order schedule of food reinforcement in rats to examine the role of CB1 receptors in the reinforcement-enhancing effects of nicotine.
authors.affiliation: Psychobiology Research Laboratories, Institute of Neuroscience, Newcastle University, UK.
authors.forename: Victoria C
authors.initials: VC
authors.lastname: Wing
authors.forename: Mohammed
authors.initials: M
authors.lastname: Shoaib