Addington ea 1991
Addington J., Addington D. Positive and negative symptoms of schizophrenia: their course and relationship overtime. - Schizoph. Res., 1991, v. 5., pp. 51-59.
Addington J., Addington D. Positive and negative symptoms of schizophrenia: their course and relationship overtime. - Schizoph. Res., 1991, v. 5., pp. 51-59.
