1. The placebo effect as a non-specific force surrounding disease and the treatment of disease;Beecher,1972
2. Angina pectoris and the placebo effect;Benson;New Engl. J. Med.,1979
3. Gould Medical Dictionary;Blakiston's,1972
4. The ethics of giving placebos;Bok;Scient. Am.,1974
5. Placebos and the Philosophy of Medicine;Brody,1977