8Greifenhagen A, Fichter M. Psychiatric homelessness research. From "psychopathology of the vagrant" to "homeless mentally ill". Nervenarzt 1996; 67(11):905 - 10
9Gelling L. Causes of ICU psychosis: the environmental factors. Nurs Crit Care1999; 4(1): 22 -6
10Goodwin R, Lyons JS. An emergency housing program as an alternative to inpatient treatment for persons with severe mental illness. Psychiatr Serv 2001; 52 (1):92 - 5