1. Caregiver's anticipatory grief in dementia: a pilot study;Theut;Int J Aging Hum Dev,1991
2. Prevalence of loss and complicated grief among psychiatric outpatients;Piper;Psychiatr Serv,2001
3. Mourning and melancholia;Freud,1917
4. Attachment and loss;Bowlby,1980
5. Mourning and its relation to manic-depressive states;Klein,1940