1. A note on the placebo;Pepper;Tr. & Stud., Coll. Physicians, Philadelphia,1945
2. The placebo and the physician;Findley;M. Clin. North America,1953
3. Cornell Conferences on Therapy,1947
4. Effects of suggestion and conditioning on the action of chemical agents in human subjects—the pharmacology of placebos;Wolf;J. Clin. Investigation,1950
5. Human Gastric Function;Wolf,1947