1. Maxwell, R. A. & Eckhardt, S. B. Drug Discovery (Humana, Clifton, New Jersey, 1990).
2. Janssen, P. A. J., Niemegeers, C. J. E. & Schellekens, K. H. L. Is it possible to predict the clinical effects of neuroleptic drugs (major tranquillizers) from animal data? Part I: 'Neuroleptic activity spectra' for rats. Drug. Res. 15, 104–117 (1965).
3. Janssen, P. A. J., Niemegeers, C. J. E., Schellekens, K. H. L. & Lenaerts, F. M. Is it possible to predict the clinical effects of neuroleptic drugs (major tranquillizers) from animal data? Part IV: An improved experimental design for measuring the inhibitory effects of neuroleptic drugs on amphetamine- or apomorphine-induced 'chewing' and 'agitation' in rats. Drug. Res. 17, 841–854 (1967).
4. Jasinski, D. R. in Drug Addiction I (ed. Martin, W. R.) 197–258 (Springer Verlag, New York, 1977).
5. Overton, D. A. State-dependent learning produced by depressant and atropine-like drugs. Psychopharmacologia 10, 6–31 (1966).