1. “Diagnostic and Statistical Manual of Mental Disorders,”,2000
2. “Dementia Praecox Oder Gruppe Der Schizophrenien.”;Bleuler,1911
3. Catatonia: I: Rating scale and standardized examination;Bush;Acta Psychiatr. Scand.,1996
4. Catatonia: II: Treatment with lorazepam and electroconvulsive therapy;Bush;Acta Psychiatr. Scand.,1996
5. Catatonic disorder due to general medical conditions;Carroll;J. Neuropsychiatry,1994