1. Central administration of the muscarinic receptor subtype-selective antagonist pirenzepine selectively impairs passive avoidance learning in the mouse;Caulfield;J. Pharm. Pharmacol.,1983
2. Drug-produced cues and states: some theoretical and methodological inferences;Colpaert,1977
3. The narcotic cue: evidence for the specificity of the stimulus properties of narcotic drugs;Colpaert;Arch. Int. Pharmacodyn. Ther.,1975
4. Probit analysis;Finney,1971
5. The use of the drug discrimination paradigm for studying hallucinogenic agents. A review;Glennon,1982