1. Pet therapy: A study of the use of companion animals in selected therapies;Arkow,1982
2. Animal-assisted therapy for elderly schizophrenic patients: A one-year controlled study;Barak;American Journal of Geriatric Psychiatry,2001
3. Milieu therapy;Barnard;Menninger Quarterly,1954
4. Between pets and people: The importance of animal companionship;Beck,1983
5. Use of animals in the rehabilitation of psychiatric inpatients;Beck;Psychological Reports,1986