Gray, N., Pedro, B. M., Pilowsky, L. S., Costa, D. C., Hemsley, D. R., Ell, P. J., . . . Kerwin, R. W. (1994). Stereotypy, schizophrenia and dopamine D2 receptor binding in the basal ganglia. Psychological Medicine, 24(2), pp. 423-429. doi:10.1017/s0033291700027392

Gray, Nicola, B. M. Pedro, L. S. Pilowsky, D. C. Costa, D. R. Hemsley, P. J. Ell, N. P. L. G. Verhoeff, and R. W. Kerwin. "Stereotypy, Schizophrenia and Dopamine D2 Receptor Binding in the Basal Ganglia." Psychological Medicine 24, no. 2 (1994): 423-429.

Gray, Nicola, et al. "Stereotypy, Schizophrenia and Dopamine D2 Receptor Binding in the Basal Ganglia." Psychological Medicine 24.2 (1994): 423-429.