4Andrease NC et al: Negative vs positive schizphrenia,definition and validation. Arch Gen Psychiatry 1982,39:789.
5Maconi PL et al.Heuristic evaluation of neuroleptic drugs in clinical pratice.use of an expert system.Bio Psychiatry 1991.29.662s.
6Michelson AM.Clinical use of superoxide dismutase and possible pharmacological approaches.London.Academic Press,1982:278.
7Abdalla DSP,et al .Activities of superoxide dismutase and glutathione peroxidase in schizophrenic and manic-depreesive patients.Clinical Chemistry 1986.32:805.
