1. Health Services Use – National Trends and Variations;Andersen,1972
2. Presidential address;Arena;Pediatrics,1972
3. Time and motion study of practicing pediatricians;Bergman;Pediatrics,1966
4. The nature of a small pediatric group practice;Breese;Pediatrics,1966
5. Demand for medical care and the supply of physicians;Budde,1972