1. Abrams, R., and Taylor, M. A. Catatonia; a prospective clinical study. Arch. Gen. Psychiatry, 1976, 33, 579–581.
2. Achte, K. A., Hillbom, E., and Aalberg, V. Psychoses following war brain injuries. Acta Psy-chiatr. Scand., 1969, 45, 1–18.
3. Andreasen, N. C., Smith, M. R., Jacoby, C. G., Dennert, J. W., and Olsen, S. A. Ventricular enlargement in schizophrenia: Definition and prevalence. Am. J. Psychiatry, 1982a, 139, 292–296.
4. Andreasen, N. C., Olsen, S. A., Dennert, J. W., and Smith, M. R. Ventricular enlargement in schizophrenia: Relationship to positive and negative symptoms. Am. J. Psychiatry, 1982b, 139, 297–302.
5. Baldwin, M., and Hofmann, A. Hallucinations. In Vinken, P. J., and Bruyn, G. W. (eds.): Handbook of Clinical Neurology. Amsterdam: North-Holland, 1969, pp. 327–339.